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S. D. Traytak and M. Tachiya
[J. Chem. Phys., Vol.102(7), pp.2760-2771, 1995]
The effect of an external electric field on the rate constant for diffusion-controlled reactions between asymmetric reactants described by the model of Solc and Stockmayer is investigated. We proposed an easy method to calculate the rate constant with any necessary accuracy and derive some analytical formulas which approximate it well for any angular size of the active site at either weak or strong electric fields. We also calculate the rate constant by applying the constant-flux method of Shoup, Lipari, and Szabo and compare it with our results. It is shown that in the case of a weak electric field the rate constant slightly depends on the active site location but this dependence becomes significant for a strong electric field.