【作者】 王克； 张东娣； 牛景杨；

【Author】 Ke Wang;Dongdi Zhang;Jingyang Niu;Henan Key Laboratory of Polyoxometalate Chemistry,College of Chemistry and Chemical Engineering,Henan University;

【机构】 河南大学化学化工学院河南省多酸化学重点实验室；

【摘要】 杂多钒酸盐作为多钒酸盐的重要分支引起了人们越来越浓厚的兴趣,不仅因为钒价态及配位构型的多样性,而且在锂电池的阴极材料方面具有潜在应用价值。本文报道一例以磷为中心杂原子的多钒酸盐K₇[PV^Ⅳ₂V^Ⅴ₁₃（OH）₃O₄₁]·8H₂O（1）。结构分析表明,化合物阴离子由8个{VO₆}八面体,5个{VO₅}四方锥,2个{VO₄}四面体围绕中心{PO₄}四面体构成（Fig.1）。值得一提的是,在该阴离子结构中,钒离子不仅表现出+4和+5两种价态,而且存在多种配位构型。更多还原

【Abstract】 Hetro-polyoxovanadates,as a subfamily of polyoxovanadates,have attracted increasing attention not only because of diversity of valence state and cluster structure,but also their potential applications as cathode materials in lithium batteries and so on ^[1,2].Herein,we obtained a new polyoxovanadate K₇[PV^Ⅳ₂V^Ⅴ₁₃（OH）₃O₄₁]·8H₂O（1）.The structural analysis indicates that the polyanion consists of a {PO₄} tetrahedron surrounded by eight {VO₆} octahedra,five {VO₅} square pyramidal units and two {VO₄} tetrahedra（Fig.1）.It is noted that the V centers in 1 are mixed-valent（V^Ⅴ/V^Ⅳ）and show various coordination geometries.更多还原