Measurement of Transverse Relaxation in Coupled Spin Systems by Semi-Selective Refocusing: Evidence for Interference of CSA and Dipolar Relaxation

被引：22

作者：

Emsley, L. ^{[1
]}

Kowalewski, J. ^{[1
]}

Bodenhausen, G. ^{[1
]}

机构：

[1] Univ Lausanne, Chim Sect, CH-1005 Lausanne, Switzerland

来源：

APPLIED MAGNETIC RESONANCE | 1990年 / 1卷 / 02期

关键词：

D O I：

10.1007/BF03166151

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

A novel spin-echo expefiment is proposed that uses semiselective Gaussian pulse cascades for refocusing in systems with homonuclear couplings. The experiment allows one to obtain evidence of differential T-2 effects due to cross-correlation of proton chemical shift anisotropy and proton-proton dipolar interactions in a small aromatic compound at 9.4 T. The spin-echo experiment is also applied to measure transverse relaxation rates for selected multiplets of the cyclic undecapeptide cyclosporin. Possible extensions to multiple-quantum spin echo-spectroscopy are indicated.

引用

页码：139 / 147

页数：9

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