[摘要]：The possibility of construction of a semiempirical method for simulation of photochemical processes and calculation of quantum yields of reactions has been studied. The practicability of the approach was demonstrated for the o-xylene -> m-xylene, m-xylene -> p-xylene, m-xylene -> o-xylene, and o-diethylbenzene -> m-diethylbenzene photoisomerization reactions as an example. The calculated quantum yields of the reactions are in qualitative agreement with experimental data.
