✦ LIBER ✦

Cross-correlation effects in the transverse relaxation of multiple-quantum transitions of heteronuclear spin systems

✍ Scribed by R. Konrat; H. Sterk

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 479 KB
Volume: 203
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)89313-7

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✦ Synopsis

The relaxation of multiple quantum transitions in a heteronuclear three-spin system is described in terms of Redfield theory including intramolecular dipolar and chemical shift anisotropy (CSA) mechanisms. CSA-dipolar cross-correlations, interference terms between CSA terms at different nuclear sites and cross-correlations between different dipolar interactions are illustrated and discussed. It is shown that cross-correlations between various relaxation mechanisms lead to non-exponential relaxation behaviour of multiple-quantum transitions, thus causing differential line broadening.

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