89556-53-6Relevant academic research and scientific papers
Photochemical ligand dissociation, electron transfer, and metal-metal bond cleavage of phosphine-substituted cobalt carbonyl complexes
Mirbach, Marlis F.,Mirbach, Manfred J.,Wegman, Richard W.
, p. 900 - 903 (1984)
The major photochemical reactions of [Co(CO)3L2][Co(CO)4] are initiated by photolysis of the cation Co(CO)3L2+. Upon photolysis Co(CO)3L2+ loses a ligand, either CO or L (L = tributylphosphine), to give Co(CO)2L2+ and Co(CO)3L+ which will react with Co(CO)4- to give Co2(CO)6L2 and Co2(CO)7L, with excess L to give Co(CO)2L3+ and Co(CO)3L2+, and with H2 to give HCo(CO)2L2 and HCo(CO)3L, respectively. The neutral complex Co2(CO)6L2 is photostable in the absence of phosphine. With an excess of L it undergoes either photosubstitution to Co2(CO)5L3 and Co2(CO)4L4 or disproportionation to [Co(CO)2L3][Co(CO)4] (major) and [Co(CO)3L2][Co(CO)3L], depending on the nature of the solvent (hexane or methanol, respectively). Electron-transfer and radical reactions are responsible for the observed products.
