Synthesis and spectroscopic analysis of complex α-Na7H[GaW9Fe3(H2O)3O37]•16H2O

被引：0

作者：

Wang, L ^{[1
]}

Wang, XL ^{[1
]}

Hou, Y ^{[1
]}

Wang, EB ^{[1
]}

机构：

[1] NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2004年 / 24卷 / 05期

关键词：

alpha-GaW9Fe3; IR; UV; Mossbauer spectrum;

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

alpha-Na7H[GaW9Fe3 (H2O)(3)O-37] (.) 16H(2)O has been synthesized and it's IR, UV, ICP and XPS, have been studied. The IR spectrum exhibits nu(as)(w-o(b)-w), nu(as)(w-o(c)-w), nu(as)(w-o(d)-w) and nu(as)(w-o(d)-w) four peaks, which indicates that it has Keggin structure. The UV spectrum has two peaks, at 210 and 268 nm, corresponding to O-d-W-->ppi-dpi and O-b/O-c-->ppi-dpi. O-b/O-c-->ppi-dpi is character peak. Both GaW9 and GaW9Fe3 have a 4 electrons reductive peaks, with E-1/2 of GaW9 minus even more, the GaW9Fe3 is alpha. Mossbauer spectrum has been studied. Effective magnetic moment is 6.00 x 10(-23) A(.)m(2). The Mossbauer spectrum at 75 K shows an isomer shift delta=0.43 mm(.)s(-1), within the range of 0.3 to 0.6 mm(.)s(-1) observed for high-spin iron(III) complexes. The authors found that title complex has antiferromagnetic properties. These kinds of heteropoly compounds have attracted our attention for the study of new materials.

引用

页码：613 / 615

页数：3