[CP2K-user] [CP2K:17695] Re: Problems optimising a heme (Fe2+) group

Marcella Iannuzzi marci.akira at gmail.com
Thu Sep 15 15:57:21 UTC 2022


Dear Sara

Before starting a geometry optimisation it is  good practice to get a 
converged single point calculation. 
If I understand correctly from the output you posted, this was not the 
case. 

I played a bit with the settings for your system and I got a converged 
single point calculation at the PBE level of theory 
for the molecule charged --2 (see the attached file).

Kind regards
Marcella

On Tuesday, September 13, 2022 at 4:00:25 PM UTC+2 salla... at gmail.com wrote:

> Dear all, 
>
> I am having problems on a geometry optimisation of a heme group with Fe2+ 
> using PBE in CP2K. My calculations run and the total energy is decreasing. 
> However, the job has been running for almost a month and it doesn't seem to 
> converge. 
>
> I am not an expert on CP2K nor on transition metals. I would really 
> appreciate it if you could help me sort this out. I have  attached the 
> restart file and the output for clarity. 
>
> Thanks a lot, 
>
>
> Sara
>

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