Surface-Catalyzed Reaction between the Gases Hydrogen Chloride and Isoprene

Mixtures of gaseous hydrogen chloride (38-150 Torr) and isoprene (38-80 Torr) were allowed to react in Pyrex IR cells equipped with sodium chloride windows. The disappearance of reactants to form, initially, 3-chloro-3-methyl-1-butene and 1-chloro-3-methyl-2-butene was monitored and subsequent formation of multimeric products, some of which were brown, were observed. Such products may contribute to the formation of, or be found on, atmospheric particles.