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#1 Quantum Chemistry » Convergence Criterion Gaussian 16 C01 question » 2024-08-10 19:08:31

Heliumqt
Replies: 1

Dear Dr. Tien,

I am trying to perform a single point calculation on a large system using the M062x functional and def2-tzvpd basis set. However, I have tried every other convergence method (qc,xqc,yqc) etc and it did not work. However, I lowered the criterion to conver=6, and that seem to work. My question is would it be better if i set the criterion to conver=7 or conver=6 or conver=4? I am not as familiar with the default setting for single point in gaussian, and also not quite sure if increasing the number (hypothetically lets say convergence criterion in gaussian is conver=4) to conver=5 or conver=6, which of those two is less accurate or "relaxed" as compared to the default.

#2 Quantum Chemistry » Locally Excited vs Charge transfer states » 2024-07-31 04:40:01

Heliumqt
Replies: 1

Dear Dr. Tian,

I have two questions 1) do you have any literature recommendations that talk about locally excited vs charge transfer photocatalysts and 2) what are some ways of computationally determining if a photocatalyst is LE or CT?

Thank you

#3 Multiwfn and wavefunction analysis » Employing electron Excitation Analysis between GS and triplet ES ? » 2024-01-26 15:08:57

Heliumqt
Replies: 1

Dear all,

I was wondering if it is possible to perform fragment contributions to hole and electron between ground state and triplet ES (calculated utilizing standard dft, not tddft) of a molecule, or electron difference analysis between the two to analyze charge transfer?. Or is this type of analysis only applicable in vertical excitation?

Thank you

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