Phase formation in the Dy2O3-HfO2-MoO3 system. Crystal structure of the new binary molybdate Dy2Hf2(MoO4)7

被引：0

作者：

S. F. Solodovnikov

B. G. Bazarov

E. Yu. Badmaeva

Yu. L. Tushinova

E. S. Zolotova

Zh. G. Bazarova

机构：

[1] Russian Academy of Sciences,A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch

[2] Russian Academy of Sciences,Baikal Institute of Nature Utilization, Siberian Branch

[3] Buryat State University,undefined

来源：

Journal of Structural Chemistry | 2004年 / 45卷

关键词：

dysprosium; hafnium; binary molybdates; phase relations; synthesis; crystal structure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Phase relations have been studied for the subsolidus region of the Dy2O3-HfO2-MoO3 system; binary molybdates, Dy2Hf(MoO4)5 and Dy2Hf2(MoO4)7, were found to form. The crystal structure of the latter has been solved (a = 20.661(3) Å, b = 9.816(1) Å, c = 13.796(3) Å, β = 113.47(1)°, Z = 4, space group C2/c, R = 0.023) and found to be a new type of structure. In the structure, MoO4 tetrahedra are linked by their vertices with HfO6 octahedra and DyO8 tetragonal antiprisms to form a 3D open-work, in which one can isolate double-row tetrahedral and octahedral chains extended down the c axis.

引用

页码：657 / 662

页数：5

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