<div dir="ltr"><div>The best approach is to compute the NMR parameters of a standard substance thet Solid State NMR people are using. That depend on the nuclei you are investigating. For example hexametilbenzene.</div><div>Once you have the absolute shielding of the reference it is easy to report all the other chemical shifts.</div><div>HTH,</div><div>Carlo</div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-03-08 12:07 GMT+01:00 Tiana Davide <span dir="ltr"><<a href="mailto:davide.tiana@epfl.ch" target="_blank">davide.tiana@epfl.ch</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Dear all,</p>
<p><br>
</p>
<p>I am calculating some nmr spectra using Gipaw.</p>
<p>Since I've never done for solid state (namely periodic bulk) I was wondering how can I calculate the chemical shift?
</p>
<p> Is the reference still TMS?</p>
<p>if yes do I need to somehow find the TMS crystal structure or can I simply run a single molecule TMS?</p>
<p>if not how can I do it?</p>
<p><br>
</p>
<p>Cheers</p><span class="HOEnZb"><font color="#888888">
<p>Davide<br>
</p>
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