Structure, frequencies of normal vibrations, thermodynamic properties, and strain energies of the cage hydrocarbons CnHn in the ideal-gas state

Results of Calculations of thermodynamic properties (heat capacities, standard entropies, and enthalpies of formation) of some cage hydrocarbons of the general formula CnHn in the ideal-gas state are presented: tetrahedrane C4H4, triprismane C6H6, cubane C8H8, pentaprismane C10H10, hexaprismane C12H12, truncated tetrahedrane C12H12, heptaprismane C14H14, octaprismane C16H16, cloclecahedrane C20H20, truncated octahedrane C24H24, and truncated cubane C24H24. (C) 2009 Elsevier B.V. All rights reserved.