Mass Spectrometry at High Temperatures. XVIII. The Stabilities of the Mono- and Difluorides of Scandium and Yttrium

Mono-, di-, and trifluorides of Sc and Y have been identified in the vapors over mixtures of the corresponding metals and CaF2 in Ta-Knudsen cells at high temperatures. Equilibria among these molecules and Ca and CaF have been studied by a mass spectrometer and their dissociation energies have been determined.