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Manual for AIMAll (Version 14.11.23)

AIMQB

AIMQB is the 'driver' application for setting up and running most QTAIM calculations with AIMAll. AIMQB automatically runs, with various options, a full QTAIM numerical analysis of one or more molecular wavefunction using theprograms AIMExt, AIMInt and AIMSum. Results from these programs are summarized in easy-to-read .sum files (a .sum file is a text file with the same base name as the corresponding wavefunctionfile but with the extension .sum). Results from these programs can also be interactively displayed using AIMStudio. Standard output (such as calculation progress)from AIMQB calculation steps can be displayed in an AIMQB log window or (when running AIMQB from a command-line) in a console window (Windows) or terminal (Mac OS X and Linux).

AIMQB can be run either in Dialog mode (GUI mode) or in Command-Line mode (non-GUI mode).

The general usage statement for AIMQB is: aimqb [options] [wfnfile | wfxfile | fchkfile]

AIMQB can be launched in Dialog mode from Windows, Mac OS X or Linux by double-clicking an AIMQB application icon or by dragging and dropping a wavefunction file onto an AIMQB application icon.

AIMQB can also be launched in Dialog mode from the 'Run' menu of AIMStudio.

AIMQB can be launched from a command-line either in Dialog mode or Command-Line mode. A detailed description of using AIMQB with options from a command-line is given here.

AIMQB Dialog

Launching AIMQB by double-clicking an AIMQB application icon or from the 'Run' menu of AIMStudio or by running aimqb from a command-line (without the -run or -nogui arguments) will display an AIMQB Dialog. An AIMQB Dialogconsists of five tabs:

AIMQB Tabs

Tab	Purpose
Wavefunctions	Choose the wavefunction files to use for calculations
Atoms	Specify the set of atoms to calculate
Methods	Specify the methods and method parameters to use for the calculations
Properties	Specify what properties to calculate
Other	Miscellaneous

The 'Wavefunctions' tab is shown above while the 'Atoms', 'Methods', 'Properties' and 'Other' tabs are shown below.

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AIMQB Dialog / Wavefunctions / List

The Wavefunction List contains the file paths of the wavefunctions (.wfn files, .wfx files, .fch files or .fchk files) on which AIMAll calculations are to be done. The Wavefunction List mustcontain at least one wavefunction file path. If more than one wavefunction file is in the Wavefunction List, the wavefunctions will be processed serially, i.e., in batch mode, beginning with the first wavefunction inthe List and ending with the last Wavefunction in the List. Wavefunctions can be added to the List using the 'Browse' button or the 'Recent' button. Wavefunctionscan also be added to the Wavefunction List by dragging the file icons from outside of AIMQB (e.g., from an Explorer window or desktop) and dropping them into the Wavefunction List. Selected wavefunctionscan be removed from the Wavefunction List using the Delete keyboard key. The order of the Wavefunctions in the List can be rearranged by dragging and dropping files within the list. The Wavefunction List can be cleared using the 'Clear' button. Note that the AIMQB Dialog settingswill be used for each of the wavefunctions in the List. If non-default settings are specified, care must be taken to ensure that they are appropriatefor each of the wavefunctions in the Wavefunction List.

Note: Running an AIMQB job with a Wavefunction List of more than 3 wavefunction files requires an AIMAll Professional license.

AIMQB Dialog / Wavefunctions / Browse...

Selecting the 'Browse' button will launch a native Windows, Mac OS X or Linux file open dialog for selecting one or more wavefunction files in a directory to be added to the Wavefunction Listto run the AIMAll calculations on. To add wavefunction files from multiple directories to the Wavefunction List, just 'Browse' multiple times.

AIMQB Dialog / Wavefunctions / External Drag-and-Drop

Wavefunction can be added to the Wavefunction List by dragging the file icons from outside of AIMQB (e.g., from an Explorer window or desktop) and dropping them into the Wavefunction List. In theabove example, proline.wfx, thiophene.wfx and thixirane.wfx are added to the Wavefunction List by dragging their file icons from a Windows explorer window and dropping them intothe List.

AIMQB Dialog / Wavefunctions / Internal Drag-and-Drop

The order of the Wavefunctions in the List can be rearranged by dragging and dropping files within the list. In the above example, proline.wfx is moved from the bottomof the List to the top.

AIMQB Dialog / Wavefunctions / Recent

The 'Recent' menu presents the 10 most recent wavefunction files that were used with AIMQB. Selecting a wavefunction file fromthe 'Recent' menu will add it to the Wavefunction List.

AIMQB Dialog / Wavefunctions / Clear

Clicking the 'Clear' button will clear the Wavefunction List.

AIMQB Dialog / Wavefunctions / Pre-Verify Wavefunction Validity

For each AIM wavefunction (.wfn file or .wfx file) in the Wavefunction List, controls whether a verification of the validity of the AIM wavefunction will be done before proceeding with the AIMAll calculations for that wavefunction. Most importantly, an orthonormality check of the MOs of the AIM wavefunction is done. Default is 'Yes',meaning the verification will be done and if the wavefunction is not acceptable then an error message will be issued and the AIMAll calculations willnot proceed for that wavefunction. Specifying 'No' will skip the verification, which is NOT advisable. Specifying'Only' will perform the verification of the wavefunction, inform the user of whether the wavefunction is acceptable or not and thenstop, i.e., no calculations will be done even if the wavefunction is acceptable.

AIMQB Dialog / Wavefunctions / Files of type

AIMQB accepts three types of wavefunction data files.

• A traditional AIM wavefunction file (extension .wfn) that can be created by many popular ab initio quantum chemistry programs.
• An extended AIM wavefunction file (extension .wfx), which is a new wavefunction file format originally defined for AIMAll. The content of a .wfx file is a superset of that in a .wfn file andit also eliminates some fixed formatting issues with traditional .wfn files.
• A g03 or g09 formatted checkpoint file (extension .fch or .fchk). In this case, AIMQB will simply convert the .fch(k) file to a corresponding .wfx or .wfn filethat will actually be used by the other programs of AIMAll.

AIMQB Dialog / Wavefunctions / FChk to AIM Wavefunction

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When a g03 or g09 formatted checkpoint file is specified as a wavefunction file, the user has a choice of creating a corresponding .wfx or .wfn file that will be used by the other programsof AIMAll. The default is to create a .wfx file. When 'Only Write' is checked, then AIMQB will terminate after the .wfx or .wfnfile is created, instead of proceeding with the usual AIMAll calculations.

AIMQB Dialog / Atoms / List

These widgets control which atoms to determine critical point connectivity for and calculate atomic properties for. The default is to determine connectivity and atomic properties of all atoms. The option 'Connectivity of All Atoms; Integration of Listed Atoms' willcalculate a full molecular graph but will only calculate atomic properties of the listed atoms. The option 'Connectivity and Integration of Listed Atoms' (recommended for reruns ofproblem atoms following an all atom run) will only determine the critical point connectivity and atomic properties of the listed atoms, i.e., the full molecular graph will not be (re)calculated. In the last case, if the fullcritical point connectivity and other critical point data is already present in a .mgp or .mgpviz file from a previous AIMQB run, then that data will be preserved if the critical points are validated. When listing atoms to calculate,use a space-separated list of atom numbers. For example, 1 3 6

AIMQB Dialog / Atoms / Skip Integrations

This checkbox controls whether to skip the atomic integrations. The default is unchecked (false). Note that the atomic integration input files (.inp) for the AIMInt program will stillbe written even if this box is checked, as will a .bat script (Windows) or .sh script (Linux and Mac OS X) for running the atomic integrations.

AIMQB Dialog / Methods / Basin Integration Method

AIMAll supports five different atomic basin integration methods: 'Auto', 'Proaim', 'Promega (1st-order)', 'Promega (3rd-order)' and 'Sculpt'. The 'Auto' method is thedefault, which means AIMAll will automatically decide which of the remaining methods to use to achieve atomic integrations results of good numerical accuracy.

NOTE: As of AIMAll (Version 12.05.09), the default atomic integration method and defaultsfor atomic integration parameters have been changed to 'Auto', which means that AIMAll will automatically determine the appropriate initial atomic integration method and integrationparameters for each atom and automatically perform appropriate recalculations of 'ProblemAtoms' as necessary to achieve atomic integration results of good numerical accuracy. Sometimes,however, advanced users may wish to choose a specific integration method and / or specific integration parameters, in whichcase the following discussion is of interest.

For AIMAll, much time and effort has been spent on improving the robustness of the default 'Proaim' Basin Integration method(compared to its original implementation in AIMPAC) since this method is the most efficient. Development work on further improvement of the 'Proaim' algorithm continues, with the goal of making it even more robust.

It is highly recommended that the default 'Proaim' Basin Integration method and the default Basin Quadrature parametersalways be tried first since they usually work quite well for most atoms and are relatively fast.

Only the 'Proaim' method can be used to calculate interatomic surface properties.

In the event that integration results for one or more atoms are not sufficiently accurate (or are unavailable) using the defaultintegration options, you can rerun AIMQB for just those problem atoms, using different integration options along with the'Atoms to Calculate' fields near the bottom of the AIMQB dialog.

If an atom has a 'potentially significant' but not 'significant' or serious integration error,simply increasing the 'Outer Ang' Basin Quadrature to 'Very High' or 'Sky High' while stillusing the 'Proaim' Basin Integration method might help, and is not too expensive.

The 'IAS Mesh' options are specific to the 'Proaim' method and control the maximum allowed spacing between adjacent interatomic surface (IAS) paths and hence the fineness of the IAS triangulationand the accuracy of the intersections of the basin integration rays with the IASs. The default 'Fine IAS Mesh' is usually quite sufficient foraccurate atomic integrations but the 'Very Fine' or 'Super Fine' IAS Meshes in conjunction with large quadratures may sometimes be useful for very accurate atomicintegrations.

Using the 'Promega (1st-Order)' basin integration method is usually a good choice for atoms whose integration resultsare significantly in error (or are unavailable due to a failure to connect a BCP to an RCP) using the default 'Proaim' method. Note,however, that the 'Promega (1st-Order)' method is significantly more expensive than the 'Proaim' method.

The 'Promega (3rd-Order)' method is similar to the 'Promega (1st-Order)' method except that upto 3 intersections of the integrations rays with the atomic surfaces are searched for. Whilethe 'Promega (3rd-Order)' is at least as accurate and sometimes more accurate than the'Promega (1st-Order)' method, it is also slower.

The method of last resort is usually the 'Sculpt' method, which is very expensive but willalways work in the rare event that the other methods fail to deliver acceptable accuracy. The non-default'Extended Capture' option can be used to significantly speed up the 'Sculpt' method, at theslight risk of causing the method to fail.

Once a rerun of AIMQB for just the specified problem atoms is done, the sumfile will automatically be properly upated to includethe results for the newly calculated atoms.

Note that for molecules with very diffuse charge distributions, such as some anions or excited states, increasing the maximum atomic integration radius may be necessary to obtain goodaccuracy, independent of the basin integration method and basin quadrature parameters. This section assumes that the maximum atomic integration radius has been set sufficiently large.

AIMQB Dialog / Methods / Basin Quadrature

NOTE: As of AIMAll (Version 12.05.09), the default atomic integration method and defaultsfor atomic integration parameters have been changed to 'Auto', which means thatAIMAll will automatically determine the appropriate initial atomic integration method and integrationparameters for each atom and automatically perform appropriate recalculations of 'ProblemAtoms' as necessary to achieve atomic integration results of good numerical accuracy. Sometimes,however, advanced users may wish to choose a specific integration method and / or specific integration parameters, in whichcase the following discussion is of interest.

Atomic basin properties are calculated using 3D numerical integration. For the purposes of the 3D integration, the atom is broken up into two major regions: an 'Inner' regionthat is a sphere (Beta sphere) centered on the nucleus and contained within the atom; and an 'Outer' region that is the rest of the atom. Both the Inner regionand Outer region integrals are done using a combination of radial and angular numerical integration quadratures.

The most important Basin Quadrature control is the 'Outer Ang' control, which determines the angular quadrature to be used for the 'Outer' region of the atom. The first six entries in the'Outer Ang' combobox (Low, Medium, High, Very High, Sky High and Super High) correspond to uniform and Gauss-Legendre quadratures for the Phi and Theta spherical polar angular coordinates, respectively. The last six entries of the 'Outer Ang' combobox (Low Lebedev to Super High Lebedev) use Lebedev quadratures for the angular integration of the Outer regionof the atom. The default 'Outer Ang' quadrature is 'Very High Lebedev'. The largest and most expensive 'Outer Ang' quadrature is 'Super High'. The larger grids may be useful for integrating atoms with very complex (but still accurately determinable) surface shapes. TheLebedev quadratures are especially useful for the very expensive Vee(A,A) and Vee(A,B) calculations.

The radial quadrature of both the Outer and Inner regions of the atom and the angular quadrature of the Inner regionof the atom are controlled using the 'Rad, Inner Ang' combobox. The entries in the 'Rad, Inner Ang' combobox correspond to multiplesof the default ('1 x') quadrature. The '1 x' radial and inner angular quadrature is almost always recommended and sufficient for calculationof most atomic properties, and certainly '3/2 x' is. A possible exception is atomic volume properties, which need higher radial quadrature for the Outer region ofthe atom to achieve the same level of accuracy as most other atomic properties calculated at a lower radial quadrature. This is because theisosurfaces that 'cap' the atomic volumes are not determined explicitly by AIMInt. The 'Auto' radial and inner angular quadratureis essential for Vee(A), Vee(A,A), Vee(A,A'), Vee(A,B) and calculations of atomic Ehrenfest forces as -(A), for which it is the default.

As of AIMAll (Version 14.06.21), the 'Rad, Inner Ang' Basin Quadrature control has been disabled, with the 'Auto' setting always being used.

Note that for molecules with very diffuse charge distributions, such as some anions or excited states, increasing the maximum atomic integration radius may be necessary to obtain goodaccuracy, independent of the basin integration method and basin quadrature parameters. This section assumes that the maximum atomic integration radius has been set sufficiently large.

AIMQB Dialog / Methods / Max. Integration Radius

NOTE: As of AIMAll (Version 12.05.09), the default atomic integration method and defaultsfor atomic integration parameters have been changed to 'Auto', which means thatAIMAll will automatically determine the appropriate initial atomic integration method and integrationparameters for each atom and automatically perform appropriate recalculations of 'ProblemAtoms' as necessary to achieve atomic integration results of good numerical accuracy. Sometimes,however, advanced users may wish to choose a specific integration method and / or specific integration parameters, in whichcase the following discussion is of interest.

The maximum atomic integration radius editor control determines the maximum radial boundary, in atomic units, that can be used for the radial integrations of the Outer region of an atom. The default is 13.0. Larger values may sometimes be necessary for some anions or excited states. Any number between 7.0 and 20.0 is allowed.

AIMQB Dialog / Methods / CP Connectivity Search

This combobox controls the intensity of the search for connectivity between the electron density critical points (CPs) found, especially connectivitybetween bond critical points (BCPs) and ring critical points (RCPs). 'Complex' is the default and searches for all CP connectivities using a very thoroughprocedure that can be expensive for systems with many atoms and many RCPs. 'Simple' searches for all CP connectivities using a somewhat less thorough and much less expensiveprocedure than that corresponding to 'Complex'. 'Basic' searches only for BCP connections to nuclear attractors critical points (NACPs) and non-nuclearattractor critical points (NNACPs), i.e., bond paths. 'Basic' is relatively fast in all cases but is not available when the 'Proaim' basinintegration method is used.

AIMQB Dialog / Properties / Atomic Ehrenfest Forces

This combobox controls whether and how to calculate atomic Ehrenfest forces. The default is not to calculate any atomic Ehrenfest forces. -(A) means the atomic Ehrenfest forces will be calculated in terms of minus the divergence of the stress tensor. -(A) means the atomic Ehrenfest forceswill be calculated in terms of the one-electron gradient of the potential energy operator, which is very expensive (more expensive than Vee(A) calculations). -(A) will also be calculated when -(A) is selected.

AIMQB Dialog / Properties / Atomic Feynman Forces

This checkbox controls whether to print atomic contributions to the Feynman electrostatic forces on each of the nuclei in the molecule to the .sum and .sumviz files. The default is unchecked (false). Atomic Feynman force data can be quite large (O(N**2)) and users uninterestedin this data should consider leaving this box unchecked to avoid cluttering the .int, .sum and .sumviz files.

AIMQB Dialog / Properties / Interatomic Surface Props

This checkbox controls whether to calculate interatomic surface (IAS) properties such as IAS areas (out to the 0.0004, 0.001 and 0.002 isodensity surfaces), the number of electrons per unit length, the kinetic energy per unit length, etc. The default is checked (true). This option can only be used in conjunction withthe default 'Proaim' atomic basin integration method. To calculate the 'Surface Virial' energy and the surface 'pressure' (surface integral of the Ehrenfest Force density) for each of the IASs, check this box and also select the -(A) option or the -(A) option for 'Atomic Ehrenfest Forces'.

AIMQB Dialog / Properties / Write Interatomic Surfaces

This checkbox controls whether to write interatomic surface (IAS) data (both GradRho paths and IAS / integration ray intersection data) to atomic .iasviz files, primarily for use with the AIMStudio visualization program. Default is unchecked (false). For a wavefunction file named abc.wfx, the .iasviz files will be written to the abc_atomicfiles subdirectory of the directory containing abc.wfx. These .iasviz files can be quitelarge (several MB per IAS) and, for large molecules, calculations using this option should typically only be done for a subset of the atoms in the molecule.

Note: Multiprocessor calculation features and all visualization-related features, such as writing .iasviz files and displaying their data in AIMStudio, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

AIMQB Dialog / Properties / Atomic IDS Props

This combobox controls the calculation of atomic isodensity surface (IDS) properties - particularly electrostatic potential (ESP) properties, which can be expensive. The default is '0.001',which means calculate ESP properties and other properties on the atomic portions of the molecule's 0.001 a.u. isodensity surface. Selecting 'No' meansthat ESP properties will not be calculated on any isodensity surfaces. Selecting 'All' means calculate ESP properties and other properties onthe atomic portions of the molecule's 0.0004, 0.001 and 0.002 a.u. isodensity surfaces. Note that the atomic isodensity surface areas are alwayscalculated.

AIMQB Dialog / Properties / Energy Components

This combobox controls which atomic energy components to calculate. The energy components are as follows:

• T(A) is the electron kinetic energy of atom A.
• Ven(A) = Ven(A,Mol) is the attraction energy between the electron density distribution of atom A and all of the nuclear charges in the molecule.
• Ven(A,A) (also called VenO(A)) is the attraction energy between the electron density distribution of atom A and the nucleus of atom A.
• Ven(A,A') is the attraction energy between the electron density distribution of atom A and the nuclei of all other atoms in the molecule. Ven(A,A') = Ven(A) - Ven(A,A).
• Vnn(A) is the contribution of atom A to the nuclear-nuclear repulsion energy of the molecule. The definition of Vnn(A) differs between the 'Virial-Based' total atomic energy approach and the IQA total atomic energyapproach. In the former case Vnn(A) is calculated from all other energy components assuming the satisfaction of the full atomic virial theorem. For IQA, Vnn(A) = Vnn(A,A')/2is simply one-half of the repulsion energy between the nucleus of atom A and the other nuclei of the molecule.
• Vne(A) = Vne(A,Mol) is the attraction energy between the nucleus of atom A and the electron density distribution of the entire molecule. This quantity only appears in the IQA atomic energy expression.
• Vne(A,A) = Ven(A,A) is the attraction energy between the nucleus of atom A and the electron density distribution of atom A.
• Vne(A,A') is the attraction energy between the nucleus of atom A and the electron density distribution of all other atoms in the molecule. Vne(A,A') = Vne(A) - Vne(A,A).
• Vee(A) = VeeC(A) + VeeX(A) = Vee(A,Mol) = VeeC(A,Mol) + VeeX(A,Mol) is half of the two-electron interaction energy between atom A and the entire molecule (including atom A). Calculations of Vee(A) can be time-consuming.
• VeeC(A) = VeeC(A,Mol) is half of the two-electron Coulomb electrostatic interaction energy between atom A and the entire molecule (including atom A). Calculations of VeeC(A) can be time-consuming.
• VeeX(A) = VeeX(A,Mol) is half of the two-electron 'exchange-correlation' interaction energy between atom A and the entire molecule (including atom A). Calculations of VeeX(A) can be time-consuming. The formulafor VeeX depends on the underlying model of the wavefunction being used. For Hartree-Fock and post Hartree-Fock wavefunctions, VeeX represents the usual two-electron non-local/Hartree-Fock-like exchange energy formula. Forthe DFT model B3LYP, VeeX represents the B3LYP exchange-correlation functional. For the DFT model LSDA, VeeX represents the LSDA exchange-correlation functional. For the DFT model M062X, VeeX represents the M062X exchange-correlation functional.
• Vee(A,A) = VeeC(A,A) + VeeX(A,A) = is the two-electron interaction energy of atom A with itself. Calculations of Vee(A,A) can be very time-consuming.
• Vee(A,A') = VeeC(A,A') + VeeX(A,A') is half of the two-electron interaction energy between atom A and all other atoms in the molecule. Vee(A,A') = Vee(A) - Vee(A,A).
• Vee(A,B) = VeeC(A,B) + VeeX(A,B) is half the two-electron interaction energy between atoms A and B. Calculations of Vee(A,B) can be time-consuming and are always accompaniedby calculations of the other diatomic interaction energy contributions Ven(A,B), Vne(A,B) and Vnn(A,B).

AIMAll supports two QTAIM total atomic energy definitions: The traditional 'Virial-Based' total atomic energy and the newer 'Interacting Quantum Atoms (IQA)'total atomic energy based on the work of Pendas et al.

The 'Virial-Based' total atomic energy of atom A is defined (by analogy with the molecular total energy expression from the molecular virial theorem) as:
E(A) = T(A) + Ven(A) + Vee(A) + Vnn(A) = -T(A) + W(A)
where Vnn(A) is defined by the QTAIM atomic virial theorem (2T(A) + Ven(A) + Vee(A) + Vnn(A) - W(A) = 0) as:
Vnn(A) = -2T(A) - Ven(A) - Vee(A) + W(A)
and where W(A) is the contribution of atom A to the nuclear virial of the energy-gradient-based forces on the nuclei. W(A) is a heuristically defined 'atomic response property' that is assumed to vanish for equilibrium and otherstationary point molecular geometries, just as W(Mol) does.
'Virial-Based' total atomic energies E(A) defined as -T(A) + W(A) are totally determined by the 1-electron density matrix (1EDM) and are relatively easy to calculate, but they are beset with the practical problem that typical approximate wavefunctionsdo not satisfy the molecular virial theorem (nor the more difficult to satisfy atomic virial theorems) and in such cases 'Virial-Based' total atomic energies E(A) defined as -T(A) + W(A)will not be additive to give the total molecular energy E.
The IQA total atomic energy of atom A, E_IQA(A), is defined as:
E_IQA(A) = T(A) + (1/2)Ven(A,Mol) + (1/2)Vne(A,Mol) + Vee(A,Mol) + (1/2)Vnn(A,A')
= T(A) + Ven(A,A) + Vee(A,A) + (1/2)Ven(A,A') + (1/2)Vne(A,A') + Vee(A,A') + (1/2)Vnn(A,A')
IQA total atomic energies are relatively costly to calculate (because of Vee(A)) but are, in principle, well-defined for any wavefunction and geometry and the potential energy terms can all beexpressed in terms of individual interactions of atom A with itself and with each of the other atoms B in the molecule, which might be useful for interpretation:
Ven(A,A') = Sum_Over_B_Not_A[Ven(A,B)]
Vne(A,A') = Sum_Over_B_Not_A[Vne(A,B)]
Vnn(A,A') = Sum_Over_B_Not_A[Vnn(A,B)]
Vee(A,A') = VeeC(A,A') + VeeX(A,A') = Sum_Over_B_Not_A[Vee(A,B)]
VeeC(A,A') = Sum_Over_B_Not_A[VeeC(A,B)]

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VeeX(A,A') = Sum_Over_B_Not_A[VeeX(A,B)]
To calculate IQA total atomic energies, it is sufficient to use the third option ('T(A), Vne(A), Ven(A), Vnn(A), Vee(A)'), which is not too expensive. To calculateindividual interatomic interaction energy contributions it is necessary to use the fifth option ('T(A), Vne(A), Ven(A), Vnn(A), Vee(A), Vee(A,A), Vee(A,A'), Vee(A,B)'), whichcan be quite expensive.
For post-Hartree-Fock, natural orbital 'wavefunctions' (which are presently all that is typically available in practice for post Hartree-Fock methods from most program) the Muller approximation of the two-electron density matrix (2EDM) in terms of natural orbitalsof the one-electron density matrix (1EDM) is used to calculate 2EDM-dependent properties (i.e., Vee contributions and electronic localizationand delocalization properties). For HF single-determinant wavefunctions the expression used for the 2EDM is exact. What this means is that for such post-Hartree-Fockwavefunctions, the IQA total atomic energies will not be additive to the give the molecular energy because of the approximation of the 2EDM.
VeeX represents the exchange-correlation functional for the wavefunction's underlying model. For Hartree-Fock wavefunctions, VeeX is the two-electronHartree-Fock exchange functional. For wavefunctions of supported DFT models (currently LSDA and B3LYP and M062X), VeeX is the actual exchange-correlation functionalof the corresponding DFT model and atomic contributions VeeX(A) to VeeX are explicitly calculated and unambiguous. However, since VeeX is at least partlyjust a one-electron functional for DFT models, the partitioning of VeeX(A) into interatomic (VeeX(A,B) and VeeX(A,A')) and intraatomic (VeeX(A,A))contributions is ambiguous. Currently, interatomic contributions VeeX(A,B) and VeeX(A,A') are calculated using the Hartree-Fock exchange functional whilethe intratomic contribution VeeX(A,A) is calculated as VeeX(A) - VeeX(A,A'). For wavefunctions of non-supported DFT models (currently models other than LSDA or B3LYP or M062X), VeeX is (incorrectly) assumedto be the Hartree-Fock exchange functional and the atomic energies E_IQA(A) will not be correct and will not sum to the correct molecular energy.
It is fair to say that use of QTAIM atomic energies and some of their components should be done only with great care and with a full understanding of what they are and what they are not. In practice (i.e., with the wavefunctionsthat are actually routinely available), the only truly well-defined, additive QTAIM total atomic energies are IQA total atomic energies calculated from Hartree-Fock and supported KS-DFT (currently LSDA or B3LYP or M062X) single-determinant wavefunctions at any geometry and virial-based total atomic energieswith any Hartree-Fock or post-Hartree-Fock wavefunction (meaning not KS-DFT wavefunctions) that satisfies the molecular virial theorem and that preferably is for anequilibrium geometry or other stationary point geometry (to avoid the necessity of heuristically approximating W(A)).
The default 'Energy Components' option is 'T(A), Ven(A), Vne(A) and Vnn(A)'.

AIMQB Dialog / Properties / Magnetic Response Properties

This combobox controls which method, if any, to use to calculate atomic magnetic response properties such as atomic net currents, atomic contributions to NMR shielding tensors and atomiccontributions to magnetizabilities. The default is not to calculate atomic magnetic response properties. The CSGTB and IGAIM methods requires a CSGT-based magnetic wavefunction file. The GIAO methodrequires a GIAO-based magnetic wavefunction file or a .fch(k) file with GIAO based density matrix data.

AIMQB Dialog / Properties / Atomic Laplacian of Rho CPs

This checkbox controls whether to locate and characterize critical points of the Laplacian of Rho (DelSqRho), where Rho is the electron density. The default is unchecked (false). The Laplacian of Rho critical point data is determinedan atom at a time and the data is written to atomic result visualization files ending with the extension .agpviz. For a wavefunction file named abc.wfx, the .agpviz files will be written to the abc_atomicfiles subdirectory of the directory containing abc.wfx. These .agpviz files can be opened in AIMStudio in orderto visualize Laplacian of Rho critical points (and corresponding atomic graph gradient paths) and their properties in 3D windows and in interactive Tables.

Note that calculation of Laplacian of Rho critical point data typically significantly increases atomic computation times and users uninterested in this datashould avoid checking this box.

Note that in AIMAll, topological analyses of the actual Laplacian of Rho (DelSqRho)are reported (as opposed to the more traditional reporting of minus the Laplacian of Rho (-DelSqRho) analyses). This is done to be consistent with the use of the Laplacian of Rho in other areas of AIMAll (plotting, for example).

The signs of the Hessian of DelSqRho and its eigenvalues are opposite to the signs of the Hessian of -DelSqRho and its eigenvalues. The signatures of critical points of DelSqRho are thus oppositein sign to those of -DelSqRho.
A (3,+3) critical point of DelSqRho (which is equivalent to a (3,-3) critical point of -DelSqRho) is a local minimum of DelSqRho and is a point of locally maximal 'Charge Concentration' when DelSqRho is negative ora point of locally minimal 'Charge Depletion' when DelSqRho is positive.
A (3,-3) critical point of DelSqRho (which is equivalent to a (3,+3) critical point of -DelSqRho) is a local maximum of DelSqRho and is a point of locally maximal 'Charge Depletion' when DelSqRho is positive ora point of locally minimal 'Charge Concentration' when DelSqRho is negative.
A (3,+1) critical point of DelSqRho is a (3,-1) critical point of -DelSqRho.
A (3,-1) critical point of DelSqRho is a (3,+1) critical point of -DelSqRho.

Note: Multiprocessor calculation features and all visualization-related features, such as writing .agpviz files and displaying their data in AIMStudio, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

AIMQB Dialog / Properties / Atomic Sources

This checkbox controls whether to calculate and print atomic source contributions to the electron density at electron density critical points and nuclei. The default is unchecked (false). Atomic source data can be quite large (O(N**2)) and users uninterestedin this data should consider leaving this box unchecked to avoid cluttering the .int, .sum and .sumviz files.

AIMQB Dialog / Other / Show Calculation Progress

This checkbox controls whether or not to show detailed calculation progress (especially atomic integration progress) in the AIMQB log window. Default is checked.

AIMQB Dialog / Other / Write Molecular Graph and Other Visualization Data

This checkbox controls whether to write molecular graph and other visualization data to a .mgpviz file (which also contains the same critical point data as the *.mgp file) and a .sumviz file for use with the AIMStudio visualization program. Default is checked.

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

AIMQB Dialog / Other / Delete Atomic .mog Files When Finished

This checkbox controls whether to delete the atomic .mog files used for Vee(A,A) and Vee(A,B) calculations when AIMQB is finished with the corresponding wavefunction. Default is checked (true). In some cases,users may wish to save the atomic .mog files to run additional Vee(A,B) calculations later, in which case this box should be unchecked.

AIMQB Dialog / Processors

The number of processors (shared memory only) to use for AIMExt and AIMInt jobs. Default is 1. Must be less than or equal to the number of logical processors of the system. If more than one atom at a time iscalculated, then the number of processors to use per atom will be (number of processors)/(number of atoms at a time). Note that the most effective use of multiple processors for small wavefunctions is to calculate more than one atomat a time (e.g., Processors = 3 and Atoms at a Time = 3). For large wavefunctions, using more than one processor per atomic calculation becomes effective (e.g., Processors = 3 and Atoms at a Time = 1).

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

AIMQB Dialog / Atoms at a Time

The number of atoms to calculate at a time. Must be less than or equal to the number of processors to use. If the number of atoms to calculate at a time is less thanthe number of processors to use, then the number of processors to use per atom will be (number of processors)/(number of atoms at a time). For example,if 4 processors and 2 atoms at a time are specified (and you have at least a 4 processor system), then two AIMInt jobs will be run at a time, each using 2 processors. Note that the most effective use of multiple processors for small wavefunctions is to calculate more than one atomat a time (e.g., Processors = 3 and Atoms at a Time = 3). For large wavefunctions, using more than one processor per atomic calculation becomes effective (e.g., Processors = 3 and Atoms at a Time = 1).

Skyhigh (jerjerplays) Mac Os Catalina

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

AIMQB Dialog / Show Atomic Windows

When more than one atom is calculated at a time the main AIMQB log window, console window or terminal will only display a summary of the progress of the atomicintegrations. The 'Show Atomic Windows' checkbox controls whether separate log windows should be shown for each atomicintegration calculation. The default is checked. Note that atomic log windows will not be shown if -console or -nogui is specified.

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

AIMQB Dialog / OK

Selecting the 'OK' button will close the AIMQB dialog and start the AIMAll calculations on the wavefunction files in the Wavefunction List, the calculation progress being shown in an AIMQB logwindow by default. If the Wavefunction List contains more than one wavefunction, the wavefunctions will processed serially, i.e., one at a time.

AIMQB Log Window

After an AIMQB job is started, an AIMQB log window is shown by default and the progress of the AIMAll calculations for each wavefunction in the Wavefunction List is continuously written tothis log window. If you close an AIMQB log window while the AIMQB job is still running, you will be given the option of killing the AIMQB job or leaving it running withoutthe log window.

Right-clicking in an AIMQB log window displays a context menu with options for controlling the appearance of the log window and otherself-explanatory items.

AIMQB Command-Line

AIMQB can be setup and / or run with any options entirely from a command-line interface.
For example, to run AIMQB using the default calculation setup options and the wavefunction file oxirane.wfn (assumed to be in the current directory), enter the following at a command prompt:
Windows: c:aimallaimqb -nogui oxirane.wfn
Mac OS X: /AIMAll/AIMQB.app/Contents/MacOS/aimqb -nogui oxirane.wfn
Linux: /usr/local/AIMAll/aimqb.ish -nogui oxirane.wfn
The -nogui argument (equivalent to -console -run -nowarn) requests that no GUI actions occur, meaning that the AIMQB calculation setupdialog is bypassed and that the standard output (such as calculation progress) and any warning or error messages will be sent to the current consolewindow or terminal instead of an AIMQB log window or warning or error message boxes.
Most of the option controls in the AIMQB dialog have corresponding command-line arguments. To get a list of command-line arguments, enter the following at a command prompt:
Windows: c:aimallaimqb -nogui -help
Mac OS X: /AIMAll/AIMQB.app/Contents/MacOS/aimqb -nogui -help
Linux: /usr/local/AIMAll/aimqb.ish -nogui -help
This will produce the following usage statement:
AIMQB (Version 14.11.23)
Copyright © 1997-2014 by Todd A. Keith
AIMQB is a component of the AIMAll package ( http://aim.tkgristmill.com )
Usage: aimqb [options] [wfxfile | wfnfile | fchkfile]
options: [-help]
[-bim=auto/proaim/promega/promega1/promega3/sculpt]
[-iasmesh=sparse/medium/fine/veryfine/superfine]
[-ucc=0/1/2]
[-boaq=auto/low/medium/high/veryhigh/skyhigh/low_leb/medium_leb/high_leb/veryhigh_leb/skyhigh_leb/superhigh_leb]
[-ehren=0/1/2]
[-feynman=false/true]
[-iasprops=true/false]
[-magprops=none/igaim/csgtb/giao]
[-source=0/1/]
[-iaswrite=true/false]
[-atidsprops=no/0.001/all]
[-encomp=0/1/2/3/4]
[-warn] [-nowarn]
[-scp=false/true/some]
[-delmog=true/false]
[-skipint=true/false]
[-f2w=wfx/wfn]
[-f2wonly=true/false]
[-atoms=all] [-atoms=all_...] [-atoms=...]
[-mir=auto/10.0/11.2/etc.]
[-cpconn=complex/simple/basic]
[-atlaprhocps=false/true]
[-wsp=true/false]
[-nproc=1/2/etc.]
[-naat=1/2/etc.]
[-shm_lmax=-1/0/1/2/etc.]
[-verifyw=yes/no/only]
[-console]
[-newconsole]
[-run]
[-nogui]
The arguments have the following meaning:
-help
Print command-line usage statement to AIMQB log window, console window or terminal.
-bim=auto/proaim/promega/promega1/promega3/sculpt
Basin integration method. Default is auto, which means AIMAll will automatically decide which method to use to achieve atomicintegrations results of good numerical accuracy.
-iasmesh=sparse/medium/fine/veryfine/superfine
This option controls the target spacing between adjacent IAS paths (the maximum allowable spacing is 10 percent larger than the targetspacing) when the 'Proaim' basin integration method is used. The default IAS Mesh is 'Fine', which is usually quite sufficient. In conjunction with large BasinQuadratures, 'Very Fine' or 'Super Fine' IAS Meshes may sometimes be useful for very accurate atomicintegrations. Naturally, calculation time increases with the fineness of the IAS Mesh.
-ucc=0/1/2
Gradient path capture method (currently applicable to Sculpt only). Legal values are currently 0 and 1. 0 is the default and means 'Basic Capture'. 1 means 'Extended Capture', which is significantly faster (but still slow) than 'Basic Capture' but has a slight chance of failure.
-boaq=auto/low/medium/high/veryhigh/skyhigh/superhigh/low_leb/medium_leb/high_leb/veryhigh_leb/skyhigh_leb/superhigh_leb
Basin outer angular quadrature. Default auto, which means AIMAll will automatically decide which outer angular quadrature to use to achieveatomic integration results of good numerical accuracy.
-ehren=0/1/2
Whether and how to calculate atomic Ehrenfest forces. Legal values are 0, 1 and 2. The default is 0, meaning don't calculate any atomic Ehrenfest forces. 1 means yes, using the -(A) expression. 2 means yes, using the expensive -(A) expression (as well as -(A)).
-feynman=true/false
Whether to print Feynman force data to the sum file. Default is false.
-iasprops=true/false
This option controls whether to calculate interatomic surface (IAS) properties such as IAS areas (out to the 0.0004, 0.001 and 0.002 isodensity surfaces), the number of electrons per unit length, the kinetic energy per unit length, etc. The default is true. This option can only be used in conjunction withthe default 'Proaim' atomic basin integration method. To calculate the 'Surface Virial' energy and the surface 'pressure' (surface integral of the Ehrenfest Force density) for each of the IASs, specify -iasprops=true and -ehren=1 or -ehren=2.
-magprops=none/igaim/csgtb/giao
Method to use to calculate atomic magnetic response properties. Default is none. These methods require magnetic wavefunction or fchk files.
-source=0/1
Whether to calculate and print atomic source contributions to the electron density at electron density critical points and nuclei. The default is 0 (false).
-iaswrite=true/false
Whether to write interatomic surface data (paths and intersection data) to *.iasviz files for use with the AIMStudio visualization program. Default is false. For a wavefunction file named abc.wfx, the .iasviz files will be written to the abc_atomicfiles subdirectory of the directory containing abc.wfx.

Note: Multiprocessor calculation features and all visualization-related features, such as writing .iasviz files and displaying their data in AIMStudio, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

-atidsprops=no/0.001/all
Controls the calculation of atomic isodensity surface (IDS) properties - particularly electrostatic potential (ESP) properties, which can be expensive. The default is -atidsprops=0.001,which means calculate ESP properties and other properties on the atomic portions of the molecule's 0.001 a.u. isodensity surface. Specifying -atidsprops=no meansthat ESP properties will not be calculated on any isodensity surfaces. Specifying -atidsprops=all means calculate ESP properties and other properties onthe atomic portions of the molecule's 0.0004, 0.001 and 0.002 a.u. isodensity surfaces. Note that the atomic isodensity surface areas are alwayscalculated.
-encomp=0/1/2/3/4
Atomic energy components to calculate. Default is 1, i.e., calculate T(A), Vne(A), Ven(A) and Vnn(A). 0 means T(A), Ven(A), and Vnn(A). 2 means T(A), Vne(A), Ven(A), Vnn(A) and Vee(A). 3 means T(A), Vne(A), Ven(A), Vnn(A), Vee(A), Vee(A,A) and Vee(A,A'). 4 means T(A), Vne(A), Ven(A), Vnn(A), Vee(A), Vee(A,A), Vee(A,A') and Vee(A,B).A bonus of the default energy component option of 1 or any other option that involves Vne(A) is that various electrostatic potential (ESP) properties - such as minimum ESP, maximum ESP and surface-integrated ESP - of the 0.0004, 0.001 and 0.002 atomic isodensity surfaces are calculated. If you are uninterested in atomicisodensity surface ESP properties and uninterested in Vne(A), Vee(A) and energy components dependent on them - such as the IQA total atomic energy - you can save some CPU time by specifying -encomp=0.
-warn
Show warning message boxes when appropriate. This is the default.

-nowarn
Do not show warning message boxes.
-scp=false/true/some
Whether to show calculation progress in the log window, console window or terminal. Default is true (show detailed calculation progress) in GUI mode andsome (some calculation progress) in command-line mode. Specifying -scp=false means that no calculation progress at all will be shown.
-skipint=true/false
Skip atomic integrations. Default is false.
-delmog=true/false
Whether to delete the atomic .mog files used for Vee(A,A) and Vee(A,B) calculations when AIMQB is finished with the corresponding wavefunction. Default is true. In some cases,users may wish to save the atomic .mog files to run additional Vee(A,B) calculations later, in which case -delmog=false should be specified.
-f2w=wfx/wfn
When opening a formatted checkpoint file, whether to create a traditional wavefunction file (wfn) or an extended wavefunction file (wfx). Default is wfx.
-f2wonly=true/false
When opening a formatted checkpoint file, whether to stop after creating the wavefunction file, i.e., no calculations by AIMExt, AIMInt or AIMSum. Default is false.
-atoms=all or -atoms=all_... or -atoms=...
These arguments control which atoms to determine critical point connectivity for and calculate atomic properties for. The default is to determine connectivity and atomic properties of all atoms. Specifying -atoms=all_... (e.g., -atoms=all_1,3,6) willcalculate a full molecular graph but will only calculate atomic properties of the listed atoms. Specifying -atoms=... (e.g., -atoms=1,3,6) (recommended for reruns of problem atoms following an all atom run) will only determine the critical point connectivity and atomic properties of the listed atoms, i.e., the full molecular graph will not be (re)calculated. In the last case, if the fullcritical point connectivity and other critical point data is already present in a .mgp or .mgpviz file from a previous AIMQB run, then that data will be preserved if the critical points are validated. When listing atoms to calculate, use a comma-separated list of atom numbers with no spaces. For example, -atoms=all_1,3,6 or -atoms=1,3,6
-mir=auto/10.0/12.0/13.5/etc.
Maximum atomic integration radius, in atomic units. Default is auto, which means AIMAll will automatically decide which maximum atomic integration radius to useto achieve atomic integration results of good numerical accuracy. Larger values than used by default may sometimes be necessary for some anions or excited states. Any number between 7.0 and 20.0 is allowed.
-cpconn=complex/simple/basic
This argument controls the intensity of the search for connectivity between the electron density critical points (CPs) found, especially connectivitybetween bond critical points (BCPs) and ring critical points (RCPs). 'complex' is the default and searches for all CP connectivities using a very thoroughprocedure that can be expensive for systems with many atoms and many RCPs. 'simple' searches for all CP connectivities using a somewhat less thorough and much less expensiveprocedure than that corresponding to 'complex'. 'basic' searches only for BCP connections to nuclear attractors critical points (NACPs) and non-nuclearattractor critical points (NNACPs), i.e., bond paths. 'basic' is relatively fast in all cases but is not available when the 'Proaim' basinintegration method is used.
-atlaprhocps=false/true
This argument controls whether to locate and characterize critical points of the Laplacian of Rho (DelSqRho), where Rho is the electron density. The default is false. The Laplacian of Rho critical point data is determinedan atom at a time and the data is written to atomic result visualization files ending with the extension .agpviz. For a wavefunction file named abc.wfx, the .agpviz files will be written to the abc_atomicfiles subdirectory of the directory containing abc.wfx. These .agpviz files can be opened in AIMStudio in orderto visualize Laplacian of Rho critical points (and corresponding atomic graph gradient paths) and their properties in 3D windows and in interactive Tables.

Note that calculation of Laplacian of Rho critical point data typically significantly increases atomic computation times and users uninterested in this datashould avoid specifying -atlaprhocps=true.

Note that in AIMAll, topological analyses of the actual Laplacian of Rho (DelSqRho)are reported (as opposed to the more traditional reporting of minus the Laplacian of Rho (-DelSqRho) analyses). This is done to be consistent with the use of the Laplacian of Rho in other areas of AIMAll (plotting, for example).

The signs of the Hessian of DelSqRho and its eigenvalues are opposite to the signs of the Hessian of -DelSqRho and its eigenvalues. The signatures of critical points of DelSqRho are thus oppositein sign to those of -DelSqRho.
A (3,+3) critical point of DelSqRho (which is equivalent to a (3,-3) critical point of -DelSqRho) is a local minimum of DelSqRho and is a point of locally maximal 'Charge Concentration' when DelSqRho is negative ora point of locally minimal 'Charge Depletion' when DelSqRho is positive.
A (3,-3) critical point of DelSqRho (which is equivalent to a (3,+3) critical point of -DelSqRho) is a local maximum of DelSqRho and is a point of locally maximal 'Charge Depletion' when DelSqRho is positive ora point of locally minimal 'Charge Concentration' when DelSqRho is negative.
A (3,+1) critical point of DelSqRho is a (3,-1) critical point of -DelSqRho.
A (3,-1) critical point of DelSqRho is a (3,+1) critical point of -DelSqRho.

Note: Multiprocessor calculation features and all visualization-related features, such as writing .agpviz files and displaying their data in AIMStudio, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

-wsp=true/false
Whether to write molecular graph and other special GradRho paths to a *.mgpviz file (which also contains the same critical point data as the *.mgp file) for use with the AIMStudio visualization program. Default is true.

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

-nproc=1/2/etc.
The number of processors (shared memory only) to use for AIMExt and AIMInt jobs. Default is 1. Must be less than or equal to the number of logical processors of the system. If more than one atom at a time iscalculated (see description of the -naat argument below), then the number of processors to use per atom will be (number of processors)/(number of atoms at a time). Note that the most effective use of multiple processors for small wavefunctions is to calculate more than one atomat a time (e.g., -nproc=3 -naat=3). For large wavefunctions, using more than one processor per atomic calculation becomes effective (e.g., -nproc=3 -naat=1).

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

-naat=1/2/etc.
The number of atoms to calculate at a time. Must be less than or equal to the number of processors to use. If the number of atoms to calculate at a time is less thanthe number of processors to use, then the number of processors to use per atom will be (number of processors)/(number of atoms at a time). For example,if -nproc=4 -naat=2 is specified (and you have at least a 4 processor system), then two AIMInt jobs will be run at a time, each using 2 processors. Note that the most effective use of multiple processors for small wavefunctions is to calculate more than one atomat a time (e.g., -nproc=3 -naat=3). For large wavefunctions, using more than one processor per atomic calculation becomes effective (e.g., -nproc=3 -naat=1).

Note: Multiprocessor calculation features and all visualization-related features, such as writing and displaying molecular graphs, require an AIMAll Professional license for wavefunctionswith more than 12 atoms or more than 400 primitive basis functions.

-shm_lmax=-1/0/1/2/etc.
This option controls the calculation of real Spherical Harmonic Moments Q[l,|m|,?] of the atomic electronic charge distributions. The default behavior is to calculateall moments from l = 0 up to an l value of 5, i.e., -shm_lmax=5 is the default. Specifying a maximum l value of -1 will result in no SHM's being calculated. The real Spherical Harmonic Moment values are written to the atomic .int files following the Cartesian moments section.
-verifyw=yes/no/only
Controls whether a verification of the validity of the AIM wavefunction (.wfx or .wfn) will be done before proceeding with the AIMAll calculations. Most importantly, an orthonormality check of the MOs of the AIM wavefunction is done. Default is 'yes',meaning the verification will be done and if the wavefunction is not acceptable then an error message will be issued and the AIMAll calculations willnot proceed. Specifying '-verifyw=no' will skip the verification, which is NOT advisable. Specifying'-verifyw=only' will perform the verification of the wavefunction, inform the user of whether the wavefunction is acceptable or not and thenstop, i.e., no calculations will be done even if the wavefunction is acceptable.
-console
Standard output (such as calculation progress) from AIMQB, AIMExt, AIMInt and AIMSum will be sent to the current console window (Windows) or terminal (Mac OS X and Linux) instead of to an AIMQB log window.
-newconsole
Windows only. Standard output (such as calculation progress) from AIMQB, AIMExt, AIMInt and AIMSum will be sent to a new console window instead of to an AIMQB log window.
-run
The AIMQB calculation setup dialog will not be shown but instead the calculation will proceed immediately. Use of this option means that a wavefunction file argument must also be present.
-nogui
This option is equivalent to: -console -run -nowarn
If you wish to run AIMQB without any GUI interaction at all (e.g., from a script or over a network), then you will typically want to use the -nogui option.
Use of this option means that a wavefunction file argument must also be present.
For example, to run AIMQB for just atoms 3 and 4 using the wavefunction file n4c2_c2h.wfx and using 'Sky High' outer angular basin quadrature, enter the following at the command prompt, assumingthe current directory contains the n4c2_c2h.wfx file:
Windows: C:aimallaimqb -nogui -atoms=all_3,4 -boaq=skyhigh n4c2_c2h.wfx
Mac OS X: /AIMALL/AIMQB.app/Contents/MacOS/aimqb -nogui -atoms=all_3,4 -boaq=skyhigh n4c2_c2h.wfx
Linux: /usr/local/AIMALL/aimqb.ish -nogui -atoms=all_3,4 -boaq=skyhigh n4c2_c2h.wfx
Note that including the directory path of the AIMQB executable (Windows and MacOSX) or aimqb.ish script (Linux) in the PATH environment variable should be considered for routine command-line usage of AIMQB (to avoidhaving to specify a full path for AIMQB every time).
Alternatively, on MacOSX and Linux, adding an aimqb() bash function to your .bashrc file can be considered to simplify the running of AIMQB:
# Bash function for command-line launching of AIMQB on Linux, to be added to .bashrc file
aimqb() {
/home/todd/AIMAll/aimqb.ish $*
}
# Bash function for command-line launching of AIMQB on MacOSX, to be added to .bashrc file
aimqb() {
/AIMALL/AIMQB.app/Contents/MacOS/aimqb $*
}

Note that for AIMQB command-line calculations on non-small wavefunctions it is recommended to run AIMQB in the background and either use -scp=false or redirect the standard outputto a log file:

/home/todd/AIMAll/aimqb.ish -nogui -scp=false dma.wfx &
or
/home/todd/AIMAll/aimqb.ish -nogui dma.wfx >& dma.qblog &
Copyright © by Todd A. Keith, 1997-2014 (aim@tkgristmill.com)