Photochemistry and photocatalytic activity of H4Ru4(CO)12 and H2Ru4(CO)13 for isomerization and hydrogenation of alkenes

摘要: Abstract The tetranuclear complex H4Ru4(CO)12 undergoes dissociative loss of CO upon near-uv, 355 nm, irradiation to give substitution products H4Ru4(CO)11L (L = P(OMe)3, PPh3) in the presence L with a quantum yield ∼5 X 10−3. In an olefin H2Ru4(CO)13 is principal Ru containing photoproduct and stoichiometric reduction observed, e.g. cyclopentene gives cyclopentane. Presumably intermediate H4Ru4(CO)11 (olefin) alkane unsaturated H2Ru4(CO)11 that rapidly reacts form H4Ru4(CO)13. slowly H2 at 25 °C. Irradiation such as 1-pentene accelerates catalyzed isomerization effects olefin, n-pentane forms from °C under whereas no occurs thermally