[ADF-LIST] UVVis for actinide complex

Ning Pu pn15 at mails.tsinghua.edu.cn
Mon Sep 25 17:34:30 CEST 2017

Dear Fedor:

Thanks a lot for your precious and detailed suggestions. I will have a try for my system.

Best Wishes

Ning Pu




-----原始邮件-----
发件人:"Fedor Goumans" <goumans at scm.com>
发送时间:2017-09-25 22:57:20 (星期一)
收件人: adflist at scm.com
抄送:
主题: Re: [ADF-LIST] UVVis for actinide complex


Dear Sir/Madam,

I'm far from an expert on UV/VIS spectra of actinides, so I hope you will get some more insights on this from the list, but already some remarks here that may help you.
1. You could try the SAOP model potential which is often used for UV/VIS because it has the right asymptotic behavior.
2. Frozen cores can be used, but some of the HF integrals involving the frozen cores are incorrect. You may get away with using frozen cores for your UV/VIS spectrum. I suggest you try it for a small model system.
3. Most probably. Try perturbative SOC and self-consistent SOC for a small model system to check.
Note that the SOC treatment of open-shell systems is highly approximate however:
https://www.scm.com/doc/ADF/Input/Excitation_energies.html?highlight=open%20shell#highly-approximate-spin-orbit-coupled-excitation-energies-open-shell-molecule

Hope this helps,
Fedor

On 9/24/2017 5:31 AM, 浦宁 wrote:


 Dear:

 I want to simulate UV/Vis spectrum of open shell actinide complex. This complex contains one Am(III) and a ligand (more than 90 atoms with C H O N and S).

I use PBE/TZ2P+small frozen core + scalar relativity, but the result is not good.

 1. Maybe pure functional is not suitable for excitation calculation?

2. I want to change for B3LYP, but in this case the frozen core cannot be used, and it is time consuming. Moreover, SCF Convergence is a problem. How can I solve this problem?

3. Does Spin-Orbital is very necessary for this system?

4. Does ADF has other better method for this system?

                  Best Wished




_______________________________________________
ADFlist mailing list
ADFlist at scm.comhttps://lists.scm.com/mailman/listinfo/adflist




-- 
Dr. T. P. M. (Fedor) Goumans
Business Developer
Software for Chemistry & Materials
Vrije Universiteit, FEW, Theoretical Chemistry
De Boelelaan 1083
1081 HV Amsterdam, The Netherlands
T +31 20 598 7625
https://www.scm.comhttps://twitter.com/SCM_Amsterdamhttps://www.linkedin.com/company/software-for-chemistry-&-materials
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scm.com/pipermail/adflist/attachments/20170925/72fbd722/attachment-0001.html>


More information about the ADFlist mailing list