High-pressure synthesis and characterization of the first cerium fluoride borate CeB2O4F.
CeB2O4F is the first cerium fluoride borate, which is exclusively built up of one-dimensional, infinite chains of condensed trigonal-planar [BO3]3-groups. This new cerium fluoride borate was synthesized under high-pressure/high-temperature conditions of 0.9 GPa and 1450 °C in a Walker-type multianvil apparatus. The compound crystallizes in the orthorhombic space groupPbca(No. 61) with eight formula units and the lattice parametersa=821.63(5),b=1257.50(9),c=726.71(6) pm,V=750.84(9) Å3,R1=0.0698, andwR2=0.0682 (all data). The structure exhibits a 9+1 coordinated cerium ion, one three-fold coordinated fluoride ion and a one-dimensional chain of [BO3]3-groups. Furthermore, IR spectroscopy, Electron Micro Probe Analysis and temperature-dependent X-ray powder diffraction measurements were performed.
Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria.
Ernst
E
Hinteregger
Klaus
K
Wurst
Martina
M
Tribus
Hubert
H
Huppertz
Cerium; Fluoride borates; High-pressure chemistry; Multianvil