Selective intermolecular zero-quantum coherence in high-resolution NMR under inhomogeneous fields
Resource
Chemical Physics Letters 386,200-205
Journal
Chemical Physics Letters 386
Pages
200-205
Date Issued
2004
Date
2004
Author(s)
Chen, Zhong
Hou, Ting
Chen, Zhi-Wei
Hwang, Dennis-W.
Hwang, Lian-Pin
DOI
246246/2006111501233041
Abstract
A selective 2D intermolecular zero-quantum coherences pulse sequence, SEL-HOMOGENIZED sequence, was developed for high-resolution NMR spectra in inhomogeneous fields. The sequence designed to effectively suppress strong solvent signals & other trivial signals can greatly decrease the t1 noise artifacts. In the homogeneous-like 1D spectrum extracted from the 2D data, chemical shifts, coupling constants, multiplicity patterns, & relative peak areas are almost independent of the magnetic field inhomogeneity. Compared to the HOMOGENIZED sequence, the new sequence provides a total sensitivity enhancement of two times. It was also demonstrated that the theoretical predictions were in excellent agreement with the experimental results.
Type
journal article
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