Transient complexes bimolecular decomposition

Bimolecular Decomposition of the Transient Complexes Methyl Transfer Reactions Rearrangement of the Carbon-Skeleton of R (H20)sCrCH02+ as a Hydride Transfer Reducing Agent Alkene Complexes... 

A. General Remarks on Unimolecular Decompositions of Chemically Activated Radicals. A major portion of the molecular beam studies of fluorine atom chemistry (12-19,37) has been concerned with a class of reactions characterized by the formation of a transient species from bimolecular association of the reactants and whose lifetime is long compared to its rotational or vibrational periods. The formation of such a long lived complex implies that the reactants experience a net attraction and consequently the potential energy surface for the reaction possesses a deep well of course, the total energy of the system is greater than that required to dissociate the intermediate, either to reactants or products, so that in the absence of a third body or relatively improbable photon emission (radiative lifetime > 10 sec), the intermediate must decay prior to detection. Under certain favorable conditions where a large... 

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