Fluorides, anhydrous metal tellurium

Tellurium hexafluoride itself has been found to form complexes with potassium, rubidium and cesium fluorides. The cesium compound has a stochiometry approaching Cs2TeF8 and, in these types of complexes, the stability of the lattice appears to be inversely related to the polarizing power of the cation and the compounds are only stable in the solid state.41 Several heptafluorotellurates(VI) have been prepared from the reaction of tellurium with chlorine trifluoride in anhydrous hydrofluoric acid followed by addition of the metal fluoride.42... 

Tellurium hexafluoride is hydrolysed by water to telluric acid, HfiTeOfi (16.62), and undergoes a number of exchange reactions such as reaction 16.77. It is also a fluoride acceptor, reacting with alkali metal fluorides and [Me4N]F under anhydrous conditions (equation 16.78). 

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