Cu and 51V simulation attempts

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tj@bc
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Posts: 13
Joined: Wed Dec 15, 2021 3:22 pm

Cu and 51V simulation attempts

Post by tj@bc »

Hello all--new user here, and my first request for help; please be patient if I make any etiquette errors.

I attempted to simulate spectra of an axially symmetric copper complex and an isotropic vanadium complex, and have not been as successful as I had hoped. I have attached the relevant code and results via screencaps, and would appreciate any feedback or advice.

Many thanks in advance!

Attachments
Cu.png
Cu.png (758.12 KiB) Viewed 8837 times
Last edited by tj@bc on Tue Jan 04, 2022 7:32 am, edited 2 times in total.
thanasis
Local Expert
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Location: Strasbourg

Re: Cu and 51V simulation attempts

Post by thanasis »

Seems like fluid solution spectra?

The first is simulated with pepper (which is for powders and frozen solutions) and the latter with garlic, but without defining a tcorr.

Maybe try out garlic with tcorr?

tj@bc
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Joined: Wed Dec 15, 2021 3:22 pm

Re: Cu and 51V simulation attempts

Post by tj@bc »

Thanks very much for the suggestion!

I tried the simulation of VOSO4 using tcorr, but it never really converged. I have attached a screen cap after I finally stopped the simulation. When I tried to vary tcorr, EasySpin first wanted me to define logtcorr instead; then it complained that the correlation was too slow (or fast, when I changed the numbers from ns to ps, just to check).

Please let me know if you have any more thoughts!

Attachments
Screen Shot 2021-12-21 at 4.07.27 PM.png
Screen Shot 2021-12-21 at 4.07.27 PM.png (419.01 KiB) Viewed 8810 times
ykliao
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Joined: Sun Jun 20, 2021 11:56 pm

Re: Cu and 51V simulation attempts

Post by ykliao »

I think you need to give anisotropic g-tensor and hyperfine tensor.

tj@bc
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Posts: 13
Joined: Wed Dec 15, 2021 3:22 pm

Re: Cu and 51V simulation attempts

Post by tj@bc »

Hello all--any thoughts on how to "fix" the g-parallel line widths for a copper compound at 130K?

Many thanks in advance!

Screen Shot 2022-01-12 at 3.27.06 PM.png
Screen Shot 2022-01-12 at 3.27.06 PM.png (325.7 KiB) Viewed 8722 times
Stefan Stoll
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Joined: Mon Jul 21, 2014 10:11 pm
Location: University of Washington

Re: Cu and 51V simulation attempts

Post by Stefan Stoll »

If this is a rigid-limit spectrum, or close to it, you might want to consider to include g-A strain correlation, Sys.gAStrainCorr.

tj@bc
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Joined: Wed Dec 15, 2021 3:22 pm

Re: Cu and 51V simulation attempts

Post by tj@bc »

Perfect--thanks again, Professor Stoll--worked very nicely!

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