Surface photochemistry: Semiconductor mediated reactions of some saturated strained

10[4.4.0.0~~~.0~*~.0~~~]decane 5) resulted, largely, in a demonstration of the resistance of their respective radical cations to rearrangement prior to back electron transfer. Calculations by MNDO, in combination with a modified version of MM2, were used to explore the differences in the reactivity of the radical cations of 1, 3, 4, 5, and an interpretation is presented.