期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 180, 期 5, 页码 1664-1671出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2007.03.011
关键词
polyoxotungstates; copper(II)-EDTA; crystal structures; magnetic properties
Reaction of Keggin polyoxotungstate with copper(II)-EDTA (EDTA = ethylenediamine tetraacetate) complex under mild conditions led to the formation of hybrid inorganic-organic compounds Na-4(OH)[(Cu(2)EDTA)PW12O40]center dot 17H(2)O (1) and Na-4[(Cu(2)EDTA)SiW12O40]center dot 19H(2)O (2). The single-crystal X-ray diffraction analyses reveal their two structural features: (1) one-dimensional chain structure consisting of Keggin polyoxotungstate and copper(II)-EDTA complex; (2) Two-dimensional layer architecture assembled by the one-dimensional chain structure and sodium linker. The results of magnetic measurements in the temperature range 300-2 K indicated the existence of ferromagnetic exchange interactions between the Cu-II ions for both compounds. In addition, TGA analysis, IR spectra, and electrochemical properties were also investigated to well characterize these two compounds. (c) 2007 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据