Characterization of the photolysis products of sec-butylcobaloximes with imidazole and benzimidazole bases

The products obtained on the photolysis, under anaerobic conditions. of sec -butylcobaloximes with bound N-donor Imidazole and Benzimidazole bases., an d sec-(C4H9)Co(DH)(2)L are identified and characterized. The results are co mpared with those obtained for other alkylcobaloximes, mainly in terms of t he involvement of the photolysis primary products in further reactions with the species in solution, namely the ability to form adducts with the base L. Electron paramagnetic resonance (EPR) spectroscopy was chosen to monitor the photolysis process, to obtain relevant information about the electroni c structure of the cobalt(II) complexes. and to determine the extent of spi n density delocalized into the ligands. (C) 2001 Elsevier Science BN. All r ights reserved.