Synthesis, structure, and characterization of an α-Dawson-type [S2W18O62]4- complex

被引：27

作者：

Himeno, S ^{[1
]}

Tatewaki, H

Hashimoto, M

机构：

[1] Kobe Univ, Fac Sci, Dept Chem, Kobe, Hyogo 6578501, Japan

[2] Wakayama Univ, Fac Syst Engn, Dept Mat Sci & Chem, Wakayama 6408510, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2001年 / 74卷 / 09期

关键词：

D O I：

10.1246/bcsj.74.1623

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A yellow sulfatotungstate complex was formed by heating a 50 mM W(Vl)-2 M H2SO4-40% (v/v) CH3CN system at 70 degreesC for 14 days, being isolated as the tetrapropylammonium (n-Pr4N+) salt. An X-ray structural analysis (orthorhombic, Pca2(1) (No. 29) a = 27.181(1), b = 14.1428(6), c = 27.7292(9) Angstrom, and Z = 4) revealed that the structure consists of an alpha -Dawson-type [S2W18O62](4-) anion. The alpha-[S2W18O62](4-) complex underwent a four-step reversible one-electron reduction in CH3CN, and the presence of acid caused the one-electron waves to be converted into three two-electron waves. The formation conditions were elucidated by a combined Raman and voltammetric study.

引用

页码：1623 / 1628

页数：6

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