Synthesis, structure, and magnetism of Np2O5

被引：59

作者：

Forbes, Tori Z.

Burns, Peter C. ^{[1
]}

Skanthakumar, S.

Soderholm, L.

机构：

[1] Univ Notre Dame, Dept Civil Engn & Geol Sci, Notre Dame, IN 46556 USA

[2] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 10期

关键词：

D O I：

10.1021/ja069250r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The binary oxide Np2O5 has been synthesized by mild hydrothermal reaction and its crystal structure has been determined. It is monoclinic, P2/c, Z = 4, a = 8.168(2), b = 6.584(1), c = 9.313(1) A, beta = 116.09(1)degrees, V = 449.8(2) A(3). The structure contains neptunyl square and pentagonal bipyramids that are linked into sheets by edge-sharing. Cation-cation interactions occur within the sheet of polyhedra and provide linkages of the sheets into a three-dimensional structure. Np2O5 undergoes antiferromagnetic ordering at 22(3) K, the highest magnetic ordering temperature observed for any neptunyl compound, and is only the second neptunyl compound found to order antiferromagnetically.

引用

页码：2760 / +

页数：3

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