Cyclopentadienyl-ruthenim and -osmium chemistry
作者： Michale I. Bruce , George A. Koutsantonis , Edward R.T. Tiekink , Brian K. Nicholson
DOI: 10.1016/0022-328X(91)80268-O
关键词: X-ray crystallography 、 Reaction mechanism 、 Alkyne 、 Osmium 、 Crystallography 、 Stereochemistry 、 Cyclopentadienyl complex 、 Chemistry 、 Ruthenium 、 Crystal structure 、 Aliphatic compound
摘要: Abstract Reactions between RuX(PPh3)2(η-C5H5)(X = Cl, I) and C2(CO2Me)2 in MeOH the presence of NH4PF6 have given three types complex, which been fully characterised by X-ray studies. These are η4-diene complexes RuX{η4-CH(CO2Me)C(CO2Me)C(CO2Me)CH(CO2Me)}- (η-C5H5) (1, X Cl; 2, η5-cyclohexadienyl derivatives Ru(η5-C5H5){ η5-C6H(CO2Me)6} (4) Ru(η5-C5H5){η5-C6[C(CO2Me)CH(CO2Me)] (CO2Me)6} (5). The formed di-, tri- tetra-merisation alkyne at mononuclear ruthenium centre; last reaction is unprecedented. Possible mechanisms discussed.
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