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S. M. Arabei and K. N. Solov'ev*
Based on the measured spectra of the action of the process of cis-trans-NH(ND)-isomerization
of 5-cyano-2,2,8,8,12,13,17,18-octamethylisobacteriochlonn (H2-COMiBCh)
and its deuteroderivative (D2-COMiBCh) in polycrystalline matrices
of n-octane and n-hexane at 4.2 K, it is established that the character
of embedding of COMiBCh in the matrices of n-alkanes has a substantial
effect on the barrier of dark rearrangement and the rate of photoinduced
NH(ND)-rearrangement, while deuteration of the center of a molecule shifts
the dynamic equilibrium toward a trans-form in photoexcitation.