[CP2K-user] [CP2K:19580] MOF optimization
K.AK
koshima02 at gmail.com
Mon Nov 27 00:26:31 UTC 2023
Dear cp2k experts
In addition, the cif files have been attached below.
Please advice me what I should modify in the input file?
Many thanks,
K.AK
2023年11月27日月曜日 9:13:32 UTC+9 K.AK:
> Dear cp2k experts
>
> Thank you for your reply, Gupta Dhananjay.
>
> I would try to change CIF to XYZ by mercury etc.software, and I simulated
> it.
>
> Also, under previous conditions, SCF did not converge, and energy change
> was approximately -1.0E-07-1.0E06.
>
> The input and output files (Default conditions & FULL_SINGLE_INVERSE )have
> been attached below.
> Could you advice me what I should modify in the input file? Should I
> change the cell structure and how do I modify it?
>
>
> Many thanks,
> K.AK
>
> 2023年11月27日月曜日 2:04:58 UTC+9 Gupta Dhananjay:
>
>> Dear K.AK,
>> If possible use any other software to change CIF to XYZ, sometimes VESTA
>> gives wrong XYZ file (sometimes it happened with me while dealing with
>> MOFs).
>>
>> Thanks
>>
>> On Fri, 24 Nov, 2023, 21:10 K.AK, <kosh... at gmail.com> wrote:
>>
>>> Dear cp2k experts
>>>
>>> Thank you for your advice, Anton Lytvynenko.
>>>
>>> In this case, CIF file which I used was converted from real CIF to XYZ
>>> coordinations by VESTA.
>>>
>>> UiO-66 was a miswritten, I would like to optimize different MOF
>>> structure.
>>>
>>> Also, I have simulated MOF optimization under suggested conditions.
>>>
>>> But, the SCF did not converged for 400 cycles.
>>>
>>> Could you advice me what I should modify in the input file?
>>>
>>> The input and output files have been attached below.
>>>
>>> Many thanks,
>>> K.AK
>>>
>>> 2023年11月24日金曜日 0:27:52 UTC+9 Anton Lytvynenko:
>>>
>>>> Dear K.AK,
>>>> Am 23.11.2023 um 15:04 schrieb K.AK:
>>>>
>>>> Also, this is a general question, but what should I do if the
>>>> calculation does not converge in the periodic boundary calculation?
>>>>
>>>> I wonder if this question can be answered shortly and via definitive
>>>> set of instructions, it worth a long manual addressing various sources of
>>>> the solution instability.
>>>>
>>>> In your case, you should first start with OT optimizer, it is quite
>>>> robust algorithm and should converge reasonably for your system.
>>>>
>>>> If you see any problems, try to check your geometry first - it can be
>>>> tricky to prepare input files from real CIF data for a number of reasons.
>>>> If there are still problems, please show us the problematic output.
>>>>
>>>> By the way, UiO-66 is a Zr MOF, isn't it? But I can't see Zr atoms in
>>>> your input. Is it correct?
>>>>
>>>> Yours,
>>>>
>>>> Anton
>>>>
>>>>
>>>> 2023年11月23日木曜日 22:53:56 UTC+9 Jürg Hutter:
>>>>
>>>>> Hi
>>>>>
>>>>> Use GPW not GAPW for this setup.
>>>>> Use DZVP-MOLOPT-SR-GTH for all elements (SR!)
>>>>>
>>>>> regards
>>>>> JH
>>>>>
>>>>> ________________________________________
>>>>> From: cp... at googlegroups.com <cp... at googlegroups.com> on behalf of
>>>>> K.AK <kosh... at gmail.com>
>>>>> Sent: Thursday, November 23, 2023 2:48 PM
>>>>> To: cp2k
>>>>> Subject: Re: [CP2K:19556] MOF optimization
>>>>>
>>>>> Thank you for your helps, Anton Lytvynenko and Jürg Hutter.
>>>>>
>>>>>
>>>>> Following your advices, I have reviewed the calculation conditions. I
>>>>> have created a new input file, and Could you please verify this?
>>>>>
>>>>> I would proceed with the calculation under these conditions. Now, the
>>>>> calculation time is approximately 120 s per step.
>>>>>
>>>>> Also, this is a general question, but what should I do if the
>>>>> calculation does not converge in the periodic boundary calculation?
>>>>>
>>>>>
>>>>> Many thanks,
>>>>>
>>>>> K.AK
>>>>>
>>>>> 2023年11月23日木曜日 22:07:19 UTC+9 Jürg Hutter:
>>>>> Hi
>>>>>
>>>>> a few general remarks:
>>>>>
>>>>> For the use of hybrid functionals in PBC, you should use an
>>>>> interaction
>>>>> potential with a cutoff (6 Angstrom should be ok).
>>>>>
>>>>> Make sure that you have enough memory to keep the integrals in core
>>>>> (print HF_INFO, set MEMORY).
>>>>>
>>>>> EPS_SCHWARZ can most likely be set to 1.E-08.
>>>>>
>>>>> Restart from a GGA wavefunction and set SCREEN_ON_INITIAL_P true.
>>>>>
>>>>> EPS_DEFAULT 1.E-10 is most likely good enough.
>>>>>
>>>>> Don't set EPS_FIT and EPS_PGF_ORB, defaults will be good enough.
>>>>> Ignore the HFX warning about occupation or follow advice in comment.
>>>>>
>>>>> REL_CUTOFF should be 60
>>>>>
>>>>> GAPW with 6-31G basis might not be a good choice. Consider GPW/MOLOPT
>>>>> basis sets. In the latter case use ADMM!
>>>>>
>>>>> For MOFs I would advice to use vdW corrections.
>>>>>
>>>>> I don't know what the reason behind the fixed K atom is. But this will
>>>>> cause
>>>>> convergence problems in the geometry optimization. It might also
>>>>> interfere with CENTER_COORDINATES (why use it for a periodic system?).
>>>>>
>>>>> regards
>>>>> JH
>>>>>
>>>>> ________________________________________
>>>>> From: cp... at googlegroups.com <cp... at googlegroups.com> on behalf of
>>>>> K.AK <kosh... at gmail.com>
>>>>> Sent: Thursday, November 23, 2023 10:10 AM
>>>>> To: cp2k
>>>>> Subject: [CP2K:19549] MOF optimization
>>>>>
>>>>> Dear experts,
>>>>>
>>>>> I try to optimize MOF structure by performing periodic DFT
>>>>> calculations.
>>>>>
>>>>> I have performed the calculations under the periodic conditions of the
>>>>> attached input file.
>>>>>
>>>>> But, the computation time is very long and the convergence is not
>>>>> good.
>>>>>
>>>>> Please advise about the cp2k simulation method and input file.
>>>>>
>>>>> The input files have been attached below.
>>>>>
>>>>>
>>>>> Many thanks,
>>>>> K.AK
>>>>>
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