RADIATION DAMPING ARTIFACTS IN 2D COSY NMR EXPERIMENTS

Citation
Ge. Ball et al., RADIATION DAMPING ARTIFACTS IN 2D COSY NMR EXPERIMENTS, Chemical physics letters, 261(4-5), 1996, pp. 421-424
Citations number
11
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
00092614
Volume
261
Issue
4-5
Year of publication
1996
Pages
421 - 424
Database
ISI
SICI code
0009-2614(1996)261:4-5<421:RDAI2C>2.0.ZU;2-X
Abstract
An experimental and theoretical analysis of multiple-quantum (MQ)-like artifacts in 2D NMR spectra of water is presented and discussed. Duri ng the t(1) domain, either magnetic field gradients or e-switching tec hniques, were used to minimize radiation damping effects. Nevertheless , a myriad of MQ artifacts, in excess of Delta m = +/- 20, were observ ed in the indirectly detected t(1) domain. The source of these MQ-like artifacts has been traced, rather surprisingly, to radiation damping in the t(2) domain. This conclusion was reached experimentally, using e-switching experiments in both the t(1) and t(2) domains, and confirm ed theoretically, using a modification of the radiation damping theory of Vlassenbroek et al., J. Chem. Phys. 103 (1995) 5886.