The Theory of DQF-COSY NMR Experiments. I. Amplitude Modulation of the Signal

被引：4

作者：

Kempgens, P. ^{[1
]}

机构：

[1] Rhodes Univ, Dept Chem, ZA-6140 Grahamstown, South Africa

来源：

CONCEPTS IN MAGNETIC RESONANCE PART A | 2010年 / 36A卷 / 06期

关键词：

NMR; DQF-COSY; amplitude modulation; spin-1; quadrupolar nuclei; AX spin system; CO-59;

D O I：

10.1002/cmr.a.20168

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：

The two-dimensional (2D) NMR double-quantum filtered COSY spectrum of an AX spin system of spin-1 has been calculated by numerical density matrix calculations. The basic phase cycle to achieve double quantum filtration consists of four steps. The total signal after these four steps is modulated in amplitude as a function of t(1). It is therefore not possible to determine the sign of the modulation frequencies Omega(u,t) in a 2D complex Fourier transformation. Additional steps in the phase cycle are needed to achieve phase modulation. (C) 2010 Wiley Periodicals, Inc. Concepts Magn Reson Part A 36A: 341-346, 2010.

引用

页码：341 / 346

页数：6

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