Notizen: [{Cp*(CI)Re}2(μ-CO)2](Re ≡ Re), ein zweikerniger Rhenium(II)-Komplex mit cis-konfigurierten, terminalen Cl-Atomen/[{Cp*(Cl)Re}2(μ-CO)2](Re ≡ Re), a Dinuclear Rhenium(II) Complex with cis Configuration of the Terminal Cl Atoms

Abstract

The reaction of [{Cp*(OC)2Re}2](Re = Re) (1), Cp* = C5Me5, with CH2Cl2 yields the dinuclear rhenium complexes [{Cp*(Cl)Re}2(μ-CO)2](Re ≡ Re) (2) with cis orientation of the Cl atoms, [{Cp*(OC)2Re}2(μ-CH2)](Re-Re) (3), a complex with a bridging CH2-carbene ligand, and [{Cp*(OC)2Re}2(μ-C=CH2)]( Re-Re) (4), a μ-vinylidene( alkenylidene) compound. The structure of 2 has been confirmed by a single crystal X-ray structure determination. Starting with [Cp*Re- (CO)2(thf)] (6) instead of 1 the reaction with CH2Cl2 affords cis-[Cp*Re(CO)2(Cl)(CH2Cl)] (7) by oxidative addition of dichloromethane.