Chemical shift tensor determination using magnetically oriented microcrystal array (MOMA): 13C solid-state CP NMR without MAS

被引：13

作者：

Kusumi, R. ^{[1
]}

Kimura, F. ^{[1
]}

Song, G. ^{[1
]}

Kimura, T. ^{[1
]}

机构：

[1] Kyoto Univ, Div Forest & Biomat Sci, Kyoto 6068502, Japan

来源：

JOURNAL OF MAGNETIC RESONANCE | 2012年 / 223卷

关键词：

Chemical shift tensor; Solid state NMR; Magnetic alignment; PSEUDO-SINGLE-CRYSTAL; ANGLE-SPINNING NMR; L-ALANINE; ANISOTROPY; POWDER; SPECTROSCOPY; DIFFRACTION; AXIS;

D O I：

10.1016/j.jmr.2012.08.006

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Chemical shift tensors for the carboxyl and methyl carbons of L-alanine crystals were determined using a magnetically oriented microcrystal array (MOMA) prepared from a microcrystalline powder sample of L-alanine. A MOMA is a single-crystal-like composite in which microcrystals are aligned three-dimensionally in a matrix resin. The single-crystal rotation method was applied to the MOMA to determine the principal values and axes of the chemical shift tensors. The result showed good agreement with the literature data for the single crystal of L-alanine. This demonstrates that the present technique is a powerful tool for determining the chemical shift tensor of a crystal from a microcrystal powder sample. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：68 / 72

页数：5

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