作者: Tilmann J. Geldbach , Gábor Laurenczy , Rosario Scopelliti , Paul J. Dyson
DOI: 10.1021/OM050849U
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摘要: Reaction of RuCl3 with 1-[2-(1,4-cyclohexadiene-1-yl)alkyl]-3-methylimidazolium chloride (alkyl = Et, butyl) and 1-[2-(1,4-cyclohexadiene-1-yl)ethyl]-2,3-dimethylimidazolium affords a series dimeric ruthenium complexes the type [RuCl2(η6-arene)]2Cl2. Treatment these salts phosphine ligands leads to highly water-sol. monomeric [RuCl2PR3(η6-arene)]Cl (PR3 PPh3, PCy3). [RuCl2(η6-1-(2-benzylethyl)-3-butylimidazolium)]Cl Ag2O gives rise η6-arene-carbene chelate complex. The have been tested as catalysts in hydrogenation styrene immobilized water or an ionic liq. aq. redn. CO2/CO32-. A carbonate-hydride complex has identified intermediate by high-pressure NMR measurements. solid-state structures several new imidazolium-functionalized arene including arene-carbene are reported.