Tagged questions

13C quaternary centers in amino acids

2 0 3k
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I've got a sample of about 5mg of an amino acid that is the final product of a a synthesis. Due to the long relaxation t...
Posted: Eneas 1 / Updated: Matthew Revington 41 Sep 06 '11 at 09:04

Can correct TAUc be a sufficient evidence of the absence of aggregation?

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Hello! I am studying the protein backbone dynamics using the standard set of NMR relaxation parameters (R1, R2, NOE). ...
Posted: Andrey 1 / Updated: Yoan Monneau 136 Jul 01 '11 at 03:52

Best Relaxation delay 3D NMR

1 1 4k
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Dear NMR WIKIers I prefer to measure best relaxation delay for 3D nmr experments by giving array ( like 0.5 , 0.6 , 0....
Updated: sri 71 May 24 '11 at 02:44

About paragnetic impurities, inorganic salts, bad workups, etc. and their impact on small-molecule NMR spectra

2 1 16468
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I sometimes face the challenge of explaining to my organic chemists that, even if no impurity signals are visible in the...
Posted: Sylvain Demanze 71 / Updated: djh 1 Aug 11 '11 at 03:19

How to study polymer degradation by gamma and X-Ray radiation?

0 1 3k
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Hi, I was asked to study polyethylene degradated by gamma and Xrays. I planed to measure relaxations rates, but which on...
Posted: Anne Baudouin 36 / Updated: Evgeny Fadeev 5771 Mar 16 '11 at 08:10

Relaxation editing vr paramagnetic relaxation enhancement experiments - 13C CP-MAS NMR

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I am a beginner in NMR spectroscopy and I would like to learn more about relaxation editing experiments vs PRE. A collea...
Posted: Nico T 33 / Updated: bmoret42 11 Jan 25 '11 at 12:29

Chemical Potential By NMR

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New to NMR, but a coworker mentioned that it may be possible to obtain chemical potential for a solution (polymer in sol...
Posted: jclark419 21 / Updated: SankarampadiAravamudhan 91 Oct 13 '10 at 19:50

Does anyone know something about paramagnetic relaxation enhancement (PRE)?

5 1 26501
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Does anyone know something about paramagnetic relaxation enhancement (PRE)? i would like to try this method on my cellul...
Posted: Nico T 33 / Updated: Bharathwaj 112 Oct 19 '10 at 08:48
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