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Asymmetric peak heights in the 13C triplet of the C-α nucleus in single crystals of L-alanine

✍ Scribed by K. Takegoshi; A. Naito; C. A. McDowell

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 353 KB
Volume: 24
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260240612

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✦ Synopsis

The asymmetric peak heights observed in the 13C triplet signals, caused by the 13C-14N dipolar interaction, of the C-a nucleus in L-alanine can he explained by the fact that a given 'H decoupliig frequency cannot simultaneously fulfill the 'on-resonance' condition for each of the three 'H resonances of the H-a nucleus bonded to C-a. Therefore, the off-resonance 'H decoupling causes an excess line broadening, to a different extent, for each of the triplet lines, with concomitant changes of the line heights.

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