Heats of Dimerization of Alkali Fluoride Molecules

Abstract

A mass spectrometer has been used to analyze vapors in equilibrium with alkali fluoride condensed phases. Monomers, dimers, and trimers have been detected in all alkali fluoride vapors. In addition to monomers and dimers characteristic of pure condensed phases, mixed dimers were found in equilibrium with mixed condensed phases. A method for determining the difference in dimerization energies for constituents in a mixed vapor has been formulated, and dimerization enthalpies for alkali fluoride species are presented.