Gas-phase conformational preference of the methyl group from equilibration of 1-, 3-, and 4-methyldiamantane on a chlorinated platinum–alumina catalyst
Abstract
On a chlorinated platinum–alumina catalyst/hydrogen chloride co-catalyst, the isomeric methyldi-amantanes establish equilibrium, the temperature dependence of which yields a value of 2·14 kcal mol–1 for the gas-phase conformational ethalpy of the methyl group.