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Syntheses and Crystal Structures of New ReO 3 ‐Type‐Derived Transition Metal Oxide Fluorides
Author(s) -
Nakhal Suliman,
Bredow Thomas,
Lerch Martin
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500089
Subject(s) - oxide , valence (chemistry) , transition metal , metal , hydrofluoric acid , crystallography , crystal structure , ion , inorganic chemistry , powder diffraction , materials science , chemistry , metallurgy , catalysis , organic chemistry
Mixed‐metal oxide fluorides M Nb 2 O 3 F 6 ( M = Mg, Zn), Mg M 2 OF 8 ( M = Ti, Zr), Fe 2 TiO 8 F, and TiNb 2 O 5 F 4 were prepared by treatment of their corresponding oxides with a 1:1 mixture of hydrofluoric acid and HNO 3 . Crystal structures were investigated by means of X‐ray powder diffraction. The anion distribution of MgZr 2 OF 8 was studied theoretically. M Nb 2 O 3 F 6 ‐type compounds can be structurally refined in the cubic ReO 3 type, MgTi 2 OF 8 ,and MgZr 2 OF 8 in the cubic NaSbF 6 type, Fe 2 TiOF 8 in the rhombohedral VF 3 type. All presented oxide fluorides are colorless powders and the metal ions are in the highest formal valence state.