SPINNING-RATE DEPENDENCE OF P-31 MAGIC-ANGLE-SPINNING NUCLEAR-MAGNETIC-RESONANCE SPECTRA IN CONDENSED PHOSPHATES

被引：19

作者：

HAYASHI, S

HAYAMIZU, K

机构：

[1] National Chemical Laboratory for Industry, Tsukuba, Ibaraki

来源：

CHEMICAL PHYSICS | 1991年 / 157卷 / 03期

关键词：

D O I：

10.1016/0301-0104(91)89030-E

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：

Two spins with anisotropic chemical shifts and dipolar coupling show spinning-rate dependent resonance positions in magic-angle spinning NMR spectra. We have measured the spinning-rate dependence of the resonance position in P-31 magic-angle-spinning NMR spectra of condensed phosphates such as Na4P2O7.10H2O,Na4P2O7,Ag4P2O7,Mg2P2O7.3H2O,Na5P3O10, (KPO3)n, and K4P2O7. We have also calculated the spinning-rate-dependent position theoretically, and the agreements between the calculated and experimental results are very good. This phenomenon can be used to identify dipolarly coupled spin pairs, and we have applied it to the peak assignment in the spectra of K4P2O7.

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页码：381 / 389

页数：9

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