The results of measurements are reported for the enthalpies of hydroge
nation of 1-phenylcyclohexene, 1-phenylcycloheptene and 1-phenylcycloo
ctene. Enthalpies of formation of the (Z)- and (E)-isomers of these sp
ecies are derived using molecular mechanics and the current and litera
ture measurements. (C) 1997 Elsevier Science B.V.