New oxyfluorotellurates(IV): MTeO3F (M = FeIII, GaIII and CrIII)
Jean Paul Laval1, Nefla Jennene Boukharrata, Philippe Thomas
1Science des Procédés Céramiques et de Traitements de Surface, UMR-CNRS, 6638, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France. jean-paul.laval@unilim.fr
Abstract:
The crystal structures of the new isomorphous compounds iron(III) oxyfluorotellurate(IV), FeTeO(3)F, gallium(III) oxyfluorotellurate(IV), GaTeO(3)F, and chromium(III) oxyfluorotellurate(IV), CrTeO(3)F, consist of zigzag chains of MO(4)F(2) distorted octahedra alternately sharing O-O and F-F edges and connected via TeO(3) trigonal pyramids. A full O/F anionic ordering is observed and the electronic lone pair of the Te(IV) cation is stereochemically active.
Related Concept Videos
02:58Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
02:58Properties of Transition Metals
02:27Predicting Molecular Geometry