Absorption Spectra of Tetra-Alkyl-Ammonium Halides

Abstract

SOME time ago, Ebert and Lange¹ observed in the course of cryoscopical measurements that tetra-alkyl-ammonium salts R₄NX do not dissociate completely in water, if R and X are heavy enough. These experiments, however, are naturally not able to distinguish between complex formation, pairs of ions kept together by electrostatic forces, and true covalent undissociated molecules. We have therefore measured the absorption spectra of a number of these salts.