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Crystal chemistry of anion‐excess ReO 3 ‐related phases. III.
Author(s) -
Laval JeanPaul
Publication year - 2014
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229614014338
Subject(s) - dodecahedron , crystal structure , zirconium , crystallography , tetrafluoride , ionic bonding , ion , chemistry , crystal chemistry , structure type , inorganic chemistry , materials science , molecule , organic chemistry
The crystal structure of the high‐pressure (4–8 GPa) form of zirconium tetrafluoride, γ‐ZrF 4 , is based on the association by corner‐ and edge‐sharing of ZrF 8 triangulated dodecahedra, forming a three‐dimensional framework. It presents some analogies with high‐temperature α‐ZrF 4 but clearly constitutes a new MX 4 structure type. The main MX 4 ionic structure types, and especially those deriving from the `anion‐excess ReO 3 ‐type', are compared and it is shown that the TeF 4 structure can also be included in this family.