STRUCTURE OF LIN(CF3SO2)2, A NOVEL SALT FOR ELECTROCHEMISTRY

被引：122

作者：

NOWINSKI, JL

LIGHTFOOT, P

BRUCE, PG

机构：

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1994年 / 4卷 / 10期

关键词：

D O I：

10.1039/jm9940401579

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 crystal structure of lithium bis(trifluoromethanesulfonimide) [LiN(CF3SO2)2] has been solved from X-ray powder diffraction data and refined by the Rietveld method. The salt crystallises in the orthorhombic system, space group Pnaa, a = 9.6351(2) angstrom, b = 5.4154(1) angstrom, c = 16.2639(3) angstrom. The anion, previously uncharacterised crystallographically, has two-fold symmetry around the nitrogen atom, with short [1.56(1) angstrom] S-N distances and a large S-N-S angle [129(1)-degrees]. This is consistent with other similar salts and suggests a high degree of double-bond character and delocalisation around N. Li+ is tetrahedrally coordinated by four oxygens from four neighbouring anions.

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页码：1579 / 1580

页数：2

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