This model makes it possible to compare the outcome of reactions originating from the carbon-cobalt bonded intermediate with those from free radical initiated ones. Moreover, free radicals in this series can be generated by two independent means. In one approach, the carbon-cobalt bonded adduct 3 was photolyzed at 27 OC in water under Ar yielding mainly the direct reduction product 10 (go%), but the rearrangement product 8 was ...