Molecule-Based Room-Temperature Magnets: Catalytic Role of V(III) in the Synthesis of Vanadium-Chromium Prussian Blue Analogues
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- 作者：Raquel Garde ; Franç ; oise Villain ; and Michel Verdaguer
- 刊名：Journal of the American Chemical Society
- 出版年：2002
- 出版时间：September 4, 2002
- 年：2002
- 卷：124
- 期：35
- 页码：10531 - 10538
- 全文大小：172K
- 年卷期：v.124,no.35(September 4, 2002)
- ISSN：1520-5126
文摘
A new synthetic procedure to obtain vanadium-chromium Prussian blue analogues is presented,using controlled amounts of VIII in solution during the synthesis. The vanadium and chromium oxidationstates and the chemical environment of the metal ions in the solids are characterized by infrared and X-rayabsorption spectroscopies. The presence of weak amounts of VIII during the synthesis provides materialswhich are better organized and present reproducible Curie temperature and magnetization at saturation inagreement with the observed V/Cr stoichiometry.