Formation of a N–C bond between co-ordinated α-di-imine and a novel diketene fragment; X-ray crystal structure of {Ru2(CO)5[PriNC(H)(H)C–N(Pri)C(O)CH2C(O)CH2]}containing an η3-aza-allyl to Ru bonded moiety

Abstract

The reaction of H₂CCO with [Ru₂(CO)₆(R-dab)][R-dab = RNC(H)–(H)CNR; R = Prⁱ, C₆H₁₁] at room temperature in heptane afforded in virtually quantitative yields {[graphic omitted]H₂]}; the X-ray crystal structure for the compound with R Prⁱ shows two novel structural features, (i), a head-to-tail bonded diketene moiety incorporated in a six membered R[graphic omitted](R) ring and (ii), an R-dab ligand converted into an η³-bonded amino-aza-allyl ligand.