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#2 Multiwfn and wavefunction analysis » CHELPG charges for excited EOM-EE-CCSD states (Q-Chem) » 2024-10-25 17:16:26

Evgenii
Replies: 2

Dear Tian,

Is it possible to calculate CHELPG charges for excited EOM-EE-CCSD states obtained with Q-Chem?

Thank you.

#3 Re: Multiwfn and wavefunction analysis » Questions on the Mulliken charge at excited states » 2023-07-06 23:17:17

Dear Tian Lu,

Tian Lu wrote:

Have you added IOp(9/40=4)?

No.

I have now recalculated with IOp(9/40=4), but it does not help:

GAUSSIAN:
Mulliken charges:
               1
     1  C   -0.529187
     2  H    0.237978
     3  O    0.053232
     4  H    0.237978

MULTIWFN (using 18 13 ... Multiwfn3.8 NO_0001.mwfn ...):
Population of atoms:
Atom     1(C )    Population:  6.52500478    Net charge: -0.52500478
Atom     2(H )    Population:  0.75219581    Net charge:  0.24780419
Atom     3(O )    Population:  7.97060360    Net charge:  0.02939640
Atom     4(H )    Population:  0.75219581    Net charge:  0.24780419


I have also noticed that Multiwfn can produce the charges (almost) identical to Gaussian's ones
if I do the following:

Multiwfn3.8 td.fchk
200
16
CI Rho(1)

reboot

Multiwfn3.8 new.mwfn
7
5
1

Population of atoms:
Atom     1(C )    Population:  6.52918728    Net charge: -0.52918728
Atom     2(H )    Population:  0.76202245    Net charge:  0.23797755
Atom     3(O )    Population:  7.94676785    Net charge:  0.05323215
Atom     4(H )    Population:  0.76202245    Net charge:  0.23797755


So maybe the problem is with the density matrix itself... ?

#4 Re: Multiwfn and wavefunction analysis » Questions on the Mulliken charge at excited states » 2023-07-06 15:33:50

Dear Tian Lu,

Thank you for this example.

I think there is a discrepancy between Multiwfn (Version 3.8(dev), release date: 2021-Aug-17) and Gaussian Mulliken charges in case of UNRELAXED density.

I use the same example, but with "density(RhoCI)":

%nproc=6
%mem=100gb
%chk=td
#p b3lyp/6-31g(d) TD density(RhoCI)

test

0 1
C                  0.00000000    0.00000000    0.52887991
H                  0.00000000    0.93775230    1.12379107
O                  0.00000000    0.00000000   -0.67757652
H                  0.00000000   -0.93775230    1.12379107

Gaussian Mulliken charges are

Mulliken charges:
               1
     1  C   -0.529187
     2  H    0.237978
     3  O    0.053232
     4  H    0.237978


In the case of Multiwfn, I follow 4.18.13 of the manual:

Multiwfn3.8 td.fchk
18
13
td.log
1

reboot

Multiwfn3.8 NO_0001.mwfn
7
5
1

Population of atoms:
Atom     1(C )    Population:  6.52542524    Net charge: -0.52542524
Atom     2(H )    Population:  0.75233290    Net charge:  0.24766710
Atom     3(O )    Population:  7.96990898    Net charge:  0.03009102
Atom     4(H )    Population:  0.75233290    Net charge:  0.24766710


So the charges are not identical.

Why is this so?


Thank you in advance.

#5 Re: Multiwfn and wavefunction analysis » Multiwfn 3.7 crashes on loading a (large) gaussian .log file » 2021-08-19 07:29:59

Version 3.8(dev), release date: 2021-Aug-17 does work for the large .log files!

Thank you!

#6 Multiwfn and wavefunction analysis » Multiwfn 3.7 crashes on loading a (large) gaussian .log file » 2021-08-18 16:50:32

Evgenii
Replies: 2

Dear Tian Lu,

Thank you for your nice program.

Unfortunately, Multiwfn 3.7 crashes on loading a (large) gaussian .log file.
Oppositely, Multiwfn 3.5 works fine loading the same .log file.

I want to perform the electron excitation analysis (18).
There is no problem with loading .fchk file.
There is a problem after loading the .log file, with Multiwfn 3.7.
Interestingly, this problem happens only for relatively large .log files.
In my particular case, I calculated TD-DFT excitation energies for one molecule and aggregates of two molecules, three molecules, ... , ten molecules.
Multiwfn 3.7 works fine for the .log files for up to three molecules; it crashes starting from four molecules.
Multiwfn 3.5 works fine for the .log file for four molecules.

Here is the relevant output (in the case of the calculation for four molecules):
Version 3.7, release date: 2020-Aug-14:

 Please input path of Gaussian/ORCA output file or plain text file, electron excitation information will be loaded from this file
 e.g. C:\lovelive\sunshine\yosoro.out
 Hint: If pressing ENTER button directly, the file with identical name as input file but with .out or .log suffix will be loaded
td.log
 This file is recognized as a plain text file
 There are   50 excited states, loading basic information...
 
forrtl: severe (59): list-directed I/O syntax error, unit 10, file "here comes a path"
Image              PC                Routine            Line        Source             
Multiwfn           0000000001EB474B  Unknown               Unknown  Unknown

Version 3.5(dev), release date: 2018-Mar-18

  Input the path of the Gaussian/ORCA output file or plain text file containing excitation data, e.g. C:\a.out
td.log
 Analyzing the file...
 There are   50 transition modes, analyze which one?  e.g. 2

Thank you in advance!

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