The photolysis of group VIB hexacarbonyl complexes in solution is studied using time-resolved IR and UV techniques. The reactions of the reactive intermediates produced by laser photolysis with small molecules (e.g. N₂, O₂) are investigated both experimentally and by density functional theory. The most probable intermediates are identified by comparison of the calculated IR and UV spectra with the simulated time-resolved spectra of the intermediates. The reaction pathways are calculated and compared to the measured kinetic data. Spectroscopic evidence of a novel weakly bound metal carbonyl-O₂ is presented.

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1. Quartet Ground State Nitrene Radicals