Spontaneous formation and transformation of organic free radical cations upon adsorption of olefins on H-mordenite

摘要

The radical cation of 2,5-dimethyl-2,4-hexadiene is identified by ESR upon adsorption of the parent molecule on activated H-mordenite. The same radical is observed when 2,3-dimethyl-1-butene or 2-methylpropene is adsorbed. This is clear evidence for highly specific dimerisation-fragmentation reactions of the primary radical cations in the zeolite at room temperature.