On the C-13 CP/MAS spectra of leucine

被引：8

作者：

Belton, P. S. ^{[1
]}

Gil, A. M. ^{[1
]}

Tanner, S. F. ^{[1
]}

机构：

[1] AFRC Inst Food Res, Norwich NR4 7UA, Norfolk, England

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 1992年 / 1卷 / 02期

关键词：

CP/MAS; depolarisation; amino acids; leucine; N-14;

D O I：

10.1016/0926-2040(92)90018-5

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 CP/MAS C-13 NMR spectra of crystalline L-leucine and DL-leucine at 7 T are compared with previously reported spectra at lower field strengths. An increasing dominance of chemical shift effects over residual N-14-C-13 dipolar interactions is observed on the C-alpha and C-beta splittings with increasing field strength. A new structure is observed in the 25 ppm region of both samples. The spectra in this region were assigned by application of the depolarisation-repolarisation method. The assignment showed differences in the ordering of peaks between solid state and liquid state chemical shifts.

引用

页码：67 / 71

页数：5

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