Abstract
The preparation and the lattice parameters for the ten title compounds with Zr2Fe12P7 type structure are reported; six of them for the first time. The crystal structures of the phosphides Th2Fe12P7 (a = 917.3(1) pm, c = 372.2(1) pm), U2Fe12P7 (a = 908.7(2) pm, c = 364.1(1) pm) and U2Ni12As7 (a = 935.9(1) pm, c = 383.5(1) pm) were refined in the space group P[6 with combining macron] (Nr. 174), where all atomic positions are fully occupied. In contrast, the structure refinements of the phosphides Th2Co12P7 (a = 912.8(1) pm, c = 370.5(2) pm) and U2Co12P7 (a = 904.3(1) pm, c = 363.9(1) pm) were carried out in the space group P63/m (Nr. 176), where the phosphorus atoms on the hexagonal axis are found on a Wyckoff site with a multiplicity of two but with an occupancy of one half. The discussion centres on this space group ambiguity in these and related structures. The near-neighbour environments of all compounds with Zr2Fe12P7 type structure correspond to space group P[6 with combining macron].
Original language | English |
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Pages (from-to) | 6067-6073 |
Journal | Dalton Transactions |
Volume | 39 |
DOIs | |
Publication status | Published - 2010 |
Treatment code (Nähere Zuordnung)
- Basic - Fundamental (Grundlagenforschung)