A bimodal Floquet analysis of phase modulated Lee-Goldburg high resolution proton magic angle spinning NMR experiments

被引：76

作者：

Vinogradov, E

Madhu, PK

Vega, S ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

[2] Johannes Kepler Univ, Inst Chem, A-4040 Linz, Austria

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 329卷 / 3-4期

基金：

奥地利科学基金会; 以色列科学基金会;

关键词：

D O I：

10.1016/S0009-2614(00)01006-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A description of phase modulated Lee-Goldburg experiments PMLG-n, with 2n pulses per rf cycle, on coupled proton systems under magic angle spinning is presented using bimodal Floquet theory. Level crossing conditions between Floquet states are derived and perturbation theory is used to account for spectral changes as a function of the spinning frequency and the number of pulses per PMLG-n sequence. High resolution solid-state proton spectra are shown that are obtained for n equal to 9, 5 and 3. Line broadening and the rf rotor frequency line positions are correlated to level anticrossings. (C) 2000 Elsevier Science B.V.

引用

页码：207 / 214

页数：8

共 27 条

[1] UNIFORM CHEMICAL-SHIFT SCALING - APPLICATION TO 2D RESOLVED NMR-SPECTRA OF ROTATING POWDERED SAMPLES [J].