Highly resolved double absorption 2D NMR spectra from complex severely truncated 2D phase-modulated signals by filter-diagonalization-averaging method

被引：15

作者：

Mandelshtam, VA ^{[1
]}

Taylor, ND ^{[1
]}

Hu, HT ^{[1
]}

Smith, M ^{[1
]}

Shaka, AJ ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 305卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(99)00395-4

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：

Application of the filter diagonalization method (FDM) to the spectral estimation of purely phase-modulated 2D-J NMR data is described. It is shown that obtaining an entire 2D line list of spectral parameters is not a prerequisite for constructing a spectral estimate of the data. Common problems with 2D FT analysis, such as phase-twist Lineshapes, spectral broadening from the time-frequency uncertainty principle, and vanishing phase-sensitive 45 degrees projections, can be ameliorated using 2D FDM. Averaging over several different FDM calculations improves the spectral presentation. Examples are shown with complex spectra obtained using only a handful of time increments. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：209 / 216

页数：8

共 18 条

[1] HOMONUCLEAR BROAD-BAND DECOUPLING AND 2-DIMENSIONAL J-RESOLVED NMR-SPECTROSCOPY [J].