SEARCH Articles Figures Tables Energetics of the concerted decomposition of six-membered ring compounds. Tabulated rate constant parameters, i.e., the pre-exponential A factors and activation energies, AE s, represent the tangential value of the calculated BAC-MP4 rate constants at 600 K. AHrxd and AErxii are evaluated at 298 K. Energies are in kcal-mol l. [Publishers Imprint]