Radical cage effects. Effect of radical mass and bond energies on cage recombination efficiencies for photochemical cage pair intermediates of [Mo2(CO)6[(η5-C5H4 CH2CH2OSiMe3)2], [Mo2(CO)65-C5H4 Me)] and [W2(CO)65-C5H4 Me)]

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Britt E. Lindfors, Jonathan L. Male, Katharine J. Covert and David R. Tyler


Abstract

The cage recombination efficiency of the [(η5-C5H4Me)(CO)3W ·, ·W(CO)35-C5H4Me)] radical cage pair in hydrocarbon solvent systems is higher than that of the analogous, but less massive, [(η5-C5H4Me)(CO)3Mo ·, ·Mo(CO)35-C5H4Me )] cage pair; the difference is shown to be attributable not to differences in the radical masses but to differences in the metal–metal bond energies or in the spin–orbit coupling.


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