科研之友
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摘要
Scheelite-type NaNd[MoO4](2) contains one crystallographic position (site symmetry (4) over bar) for the large cations, which is mixed-occupied by Na+ and Nd3+ cations in a 1:1 molar ratio. Thus, both are surrounded by eight O atoms in the shape of a trigonal dodecahedron. Furthermore, the structure consists of crystallographically unique [MoO4](2-) units (site symmetry (4) over bar) surrounded by eight sodium and neodymium cations, which are all vertex-attached. The polyhedra around the Na+/Nd3+ cations are connected to four others via common edges, building up a three-dimensional network in whose tetrahedral voids of O atoms the Mo6+ cations reside.
- 出版日期2011-12
