Some Comparisons of the Classical RRK and the RRKM Theoretical Rate Formulations

摘要

It is shown by comparison with RRKM (Ricemdash;Ramspergermdash;Kasselmdash;Marcus) calculations for unimolecular reactions that the classical Kassel empirical fit parametersis a complex function of temperature, the critical energy egr;0, and of the vibrational pattern of the molecule and activated complex considered. The comparisons have afforded a delineation of quantal molecular behavior and of the empirical classical interpretation. Some detailed application is made to the methane and fluoroform decomposition reactions. Possible discrepancies in shockhyphen;tube measurements are discussed.