All of the Group 5 anions [MOF5]2- (M = V, Nb, Ta) show the metal distorted from the center of the octahedron to the corner defined by the oxide ion. While [NbOF5]2- and [TaOF5]2- direct coordination through the oxide and trans fluoride ligands, the increase in vanadium oxide bond valence results in coordination through cis fluoride ligands in [VOF5]2-. The structure-directing properties of [VOF5]2- more closely resemble those of the Group 6 anion [MoO2F4]2-.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry