6-peroxo-6-zirconium crown and its hafnium analogue embedded in a. triangular polyanion:: [M6(O2)6(OH)6(γ-SiW10O36)3]18 (M = zr, hf)

被引：118

作者：

Bassil, Bassem S. ^{[1
]}

Mal, Sib Sankar ^{[1
]}

Dickman, Michael H. ^{[1
]}

Kortz, Ulrich ^{[1
]}

Oelrich, Holger ^{[2
]}

Walder, Lorenz ^{[2
]}

机构：

[1] Jacobs Univ, Sch Sci & Engn, D-28725 Bremen, Germany

[2] Univ Osnabruck, Inst Chem, D-49069 Osnabruck, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 21期

关键词：

D O I：

10.1021/ja801424q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have synthesized and structurally characterized the unprecedented peroxo-zirconium(IV) containing [Zr(6)(O(2))(6)(OH)(6)(gamma-SiW(10)O(36))(3)](18-) (1). Polyanion 1 comprises a cyclic 6 -peroxo-6-zirconium core stabilized by three decatungstosilicate units. We have also prepared the isostructural hafnium(V). analogue [Hf(6)(O)(6)(OH)(6)(gamma-SiW(10)O(36))(3)](18-) (2). We investigated the acid/base and redox properties of 1 by UV-vis spectroscopy and electrochemistry studies. Polyanion 1 represents the first structurally characterized Zr-peroxo POM with side-on, bridging peroxo units. The simple, one-pot synthesis of 1 and 2 involving dropwise addition of aqueous hydrogen peroxide could represent a general procedure for incorporating peroxo groups into a large variety of transition metal and lanthanide containing POMs.

引用

页码：6696 / +

页数：3

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