Abstract
In this letter we report a study of Mn2(CO)10 photodissociation using photoselective transient transmission on a 100 fsec timescale. Absorption in the UV is known to induce both metal-metal bond fission, as well as decarbonylation, leading to Mn(CO)5 and Mn2(CO)9 as primary photoproducts1. The overall quantum efficiency for decomposition is ~0.4, three quarters of which involves the metallic bond breaking. Flash photolysis studies have associated the Mn(CO)5 and Mn2(CO)9 with transient absorption bands centered at 800 and 500 nm respectively2. The former has been studied extensively through ultrafast spectroscopy. Rapid initial features in the near IR spectral region have been associated either with metallic bond cleavage through a metastable excited state, or to recombination following an ultrafast initial dissociation3,4.
© 1994 Optical Society of America
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