Abstract

The chemical reaction between close-paired (in-cage) chemically anisotropic molecules is discussed. When orientational relaxation is slow, such a reaction is found to be controlled by molecular reorientations. In particular, the reaction acceleration by orientational relaxation is calculated for two (“pronounced”, local and “smooth”, nonlocal) models of chemical anisotropy. The results obtained depend significantly on the relaxation mechanism (which is considered to be either by diffusion or jumps). It is shown that the reorientation frequency dependence of the long-time reaction rate enables the two alternative mechanisms of relaxation to be determined.

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