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Topic: NMR  (Read 2610 times)

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Offline blazingrifath

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NMR
« on: February 23, 2014, 12:13:33 PM »
hello all

Could you please tell me if there are difference in chemical shifts for the same molecule in liquid NMR and solid state NMR??

Thanks :)

Offline Irlanur

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Re: NMR
« Reply #1 on: February 28, 2014, 03:41:50 AM »
The chemical shift is probably quite similar, unless there are some kind of solvent effects. The major difference in SSNMR is, that (unless you have a single crystal) you "see" the whole chemical shift tensor. The shielding value depends on the orientation relative to the magnetic field. in solution, you only see the average (isotropic) signal. in ssnmr without magic angle spinning, you see the all possible orientations (weighted with their probability). summa summarum: you have BROAD lines.

Offline blazingrifath

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Re: NMR
« Reply #2 on: March 17, 2014, 09:01:13 AM »
thanks a lot for your answer. I really appreciate it

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