Absorption spectrum of the carbon tetrachloride molecular cation in noble-gas matrices

Abstract

Carbon tetrachloride diluted in argon, krypton or xenon and subjected to vacuum-ultraviolet radiation during and after condensation gave strong photosensitive absorptions at 425, 430 and 455 nm, respectively, which are assigned to CCl₄⁺. This study suggests that absorptions in this region following radiolysis of CCl₄ in hydrocarbon glasses are probably due to CCl₄⁺ as well and that structural relaxation follows ionization of CCl₄ in the solid phase.