Investigation of the behavior of the probability of a nonradiative transition in benzene with deuteration

The behavior of the T₁ S₀ nonradiative transition in benzene with deuteration was investigated within the limits of the theory of multiphonon transitions. A calculation of the relative changes in the probability of a T₁ S₀ nonradiative transition for C₆H₆, C₆D₆ and C₆H₃D₃ was performed together with a qualitative treatment in the harmonic approximation. The cause of the peculiar effect of anharmonicity in the results of the calculation for benzene and its deuteroanalogs, which can only be removed by a substantial reduction in the symmetry, is indicated.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, Vol. 16, No. 9, pp. 94–98, September, 1973.