Fluoride crystal structures. Part V. Potassium pentafluorotellurate(IV)

Abstract

Crystals of potassium pentafluorotellurate(IV) are orthorhombic, space group Pbcm, with a= 4·72, b= 9·18, c= 11·24 Å. The structure was refined by least-squares methods on three-dimensional data, the final R being 0·106 for 422 independent reflections. The crystal consists of K⁺ and TeF₅^– ions, the latter having five fluorine atoms and a non-bonding pair of electrons in a distorted octahedral arrangement around the tellurium atom.