The low-temperature barium fluoridozirconate variety α-BaZr2F10

Abstract

The low-temperature triclinic variety α-BaZr2F10 constitutes a new structure type, less symmetrical than the higher-temperature β-variety. It is based on the stacking of double sheets of Zr polyhedra, connecting three different kinds of ZrF7 polyhedra and one ZrF8 polyhedron via vertices and edges, separated by corrugated Ba2+ layers. It is compared to the high-temperature β-variety, directly recrystallizing from barium fluoridozirconate glass, and also to BaTe2F10 and KTe2F9.