Modified electron transfer model for excitation functions of the type M + RX → MX + R and M+ + RX− (M = alkali,R = alkyl group,X = halogen) and M′ + N2O → MO* + N2 (M′= Ba OR Sm) |
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Authors: | AGonzález Ureña Michael Menzinger |
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Institution: | Departamento de Quimica Fisica, Facultad de Quimica Universidad Complutense de Madrid, 28040 Madrid, Spain;Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S JA1 |
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Abstract: | A one-dimensional model is described for the excitation functions of reactions that are initiated by an electron transfer at close range. The process is governed by a barrier in the entrance channel, the abortive reflection of trajectories at higher energies and by the competition of an adiabatic and a diabatic channel for the reactive flux. The model is fitted to measured cross sections for the (K.Rb)+CH3I, K+C2H5Br and (Ba.Sm)÷ N2O reactions and the electron transfer cross section for K+CH3I → K+ + CH3I- is successfully predicted from the fitting parameters of the reactive channel. |
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