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#1 Re: Multiwfn and wavefunction analysis » Help for using ELF in Coordination Compounds. » 2023-04-30 16:50:01

Dear Tian Lu.
I fully understood the effect of the grid value on the analysis. Thanks. I reevaluated the data and it made more sense. I still have two doubts: 1) V(Zn,O) in the figure that describes the attractor 19 (fig1) and the attractors 26 and 9 would the V(O) represent the isolated pairs (fig 2 is atractor 26  which is close to atractor 9)? The electron density analysis matches this assessment.
2) Is there a DI value for the BPC obtained by QTAIM? Should this be calculated using the BPC coordinate by redoing the basin analysis in the option Study source function in AIM basins?

Thank you for your attention.
dislin.png

dislin-1.png

#2 Multiwfn and wavefunction analysis » Help for using ELF in Coordination Compounds. » 2023-04-29 13:40:37

glauciobf
Replies: 3

I am evaluating the use of Multiwfn for comparative work on QTAIM and ELF, as found in recent papers on coordination compounds. So, I did a test and based on the models from the Multiwfn manuals. However, I have a doubt, when identifying the attractors in the ELF analysis that are generated from the electronic density. I do not identify points on the bond axis, as in the case of the QTAIM analysis. In fact, what I identify and what I have the impression is that they are the isolated pairs of the O atom of the water molecule and the orbitals of the metallic ion (Zn2+). Is this right? Because when trying to analyze this way, the result indicates a very low interaction at these points. Could anyone give any tips?
Do I need to make any corrections for proper analysis of attractors in the M-O bond?
The aquacomplex [Zn(OH2)6]2+ was optimized with Functional M06L2X and base function Def2tzvp.
ELF-atractors-Zn-H2-O-6-2.jpg

QTAIM-BPC-Zn-H2-O-6-2.jpg

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