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#1 Re: Multiwfn and wavefunction analysis » Difference in Critical Points Results Between My Calculation and Refer » 2025-09-27 17:27:13

If I convert my checkpoint file (.chk) to a formatted checkpoint file (.fch) using Gaussian 09, and then convert it to a .wfn file using Multiwfn, does this process cause any difference in the final results of the AIM analysis? Also, does the Gaussian version (09 vs. 16) affect the results

#2 Multiwfn and wavefunction analysis » Difference in Critical Points Results Between My Calculation and Refer » 2025-09-27 11:38:46

syrine boussadia
Replies: 3

Hello,

I repeated the example from the file 2-pyridoxine_2-aminopyridine.wfn taken from the Multiwfn 3.8 manual. With this example, I obtain the same results for the critical points (CP), like position (Bohr), density of all electrons, etc., as those shown in the manual and with VMD.

However, when I apply the same procedure to my own molecule, my results differ from those provided by my professor.

Could you help me understand why there is this difference?

Thank you in advance!

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