A natural abundance 77Se solid-state NMR study of inorganic compounds

被引：16

作者：

Kemp, T. F. ^{[1
]}

Wong, A. ^{[1
]}

Smith, M. E. ^{[1
]}

Bishop, P. T. ^{[2
]}

Carthey, N. ^{[2
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] Johnson Matthey Technol Ctr, Reading RG4 9NH, Berks, England

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 2008年 / 34卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

Se-77; NMR; Inorganic selenides; Selenates; Shift range; Hyperfine interactions;

D O I：

10.1016/j.ssnmr.2008.10.003

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：

Various inorganic selenium-based compounds were analysed by Se-77 solid-state NMR, and a distinct difference in chemical shift ranges for compounds where selenium is present as selenide (Se2-) ionically and covalently bonded systems was observed. The selenides exhibit a shift range of approximately -700 to -100 ppm, as opposed to 700 to 1600 ppm for the Compounds where there tends to be more direct covalent bonding to the selenium. The anisotropic hyperfine shift observed in NbSe2 is shown to be axially symmetric, where the Hit component is found to be normal to the Se3-trigonal plane. (c) 2008 Elsevier Inc. All rights reserved.

引用

页码：224 / 227

页数：4

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