• 作者： 林英智
• 作者服務機構： Department of Chemistry, National Taiwan University, Taipei, Taiwan, R.O.C.
• 中文摘要： We report the synthesis of metal-metal bonded dinuclear ruthenium ketene complex [CpRu(CO)]/sub 2/(.mu.-CH/sub 2/CO)(.mu.-CO), 3, (Cp=.eta./sup 5/-C/sub 5/H/sub 5/) which contains the unique structural feature, of a .mu.-.eta./sup 2/(C,C) ketene group bridging two metal centers. Complex 3 is prepared by a rare intramolecular CO insertion to the methylene group of a Ru complex [CpRu(CO)/sub 2/]/sub 2/(.mu.-CH/sub 2/), 1, in the absence of CO or any donor ligand. The cis and trans isomers of 3 originating from the arrangement of the Cp groups and the unsymmetrically bridging ketene group, are observed in the NMR spectra. Unlike a ketene complex without a metal-metal bond [CpRu(CO)/sub 2/]/sub 2/(.mu.-CH/sub 2/CO), 2, complex 3 exhibits the chemistry of a ketene molecule and might be used as a stoichiometric ketene precusor in organic reactions.
• 英文摘要： --
• 中文關鍵字： Methylene carbonylation; ruthenium ketene; hydrogenation.
• 英文關鍵字： Methylene carbonylation; ruthenium ketene; hydrogenation.