Pulse Radiolytic Investigation of the Radiation‐Induced Cationic Primary Processes in Carbon Tetrachloride

Abstract

AbstractBy nanosecond pulse radiolysis with optical detection the observable transients measured in pure carbon tetrachloride were identified as the radical cation CCl4·+, an ion‐pair neutralization complex [CCl4·+ ··· Cl−] and an anion Cl2−. If aromatic scavengers Ar were added donor‐acceptor complexes of the type [Cl ← Ar] and aromatic radical cations Ar·+ were observed and kinetically characterized. — A step‐wise charge transfer from CCl4·+ to alkanes and further to aromatics was used to derive information on the nature of an existing primary positive charge carrier which probably has the structure of an excited radical cation CCl4·+*. Based on these observations an overall reaction mechanism describing the radiation‐induced processes of cationic origin in the carbon tetrachloride/scavenger system was formulated.