Calculation of CIDNP field dependences in biradicals in the photolysis of large-ring cycloalkanones Original Research Article

Calculations of CIDNP effects in recombination of acyl–alkyl biradicals arising in the photolysis of cycloalkanones have been performed. Singlet–triplet transitions occurring in the terms intersection zone and essential for the effect are taken into account in the balance approximation. The calculated CIDNP field dependences have been compared with experimental data obtained for biradicals with different lifetimes. Good agreement has been achieved. Interpretation of CIDNP field dependences is given.