Chemistry of vinylidene complexes. XXII. Synthesis and physicochemical properties of the binuclear vinylidene complex [Cp(CO)2ReCu(μ-CCHPh)(μ-Cl)]2. Molecular structure of the new rheniumcopper complex

•The new synthesized complex [Cp(CO)2ReCu(µ-C]CHPh)(µ-Cl)]2 was full characterized.•The obtained data shown a weak interaction between copper and rhenium atoms.•The new complex [Cp(CO)2ReCu(µ-C]CHPh)(µ-Cl)]2 revealed the shortest Re–Cu distance among the known rhenium–copper complexes.

The interaction between Cp(CO)2ReCCHPh (1) and CuCl results in the new heterometallic μ-vinylidene complex [Cp(CO)2ReCu(μ2-CCHPh)(μ2-Cl)]2 (2) characterized earlier by IR and 1H, 13C NMR spectra. The molecular structure of compound 2 has been determined by X-ray diffraction analysis, revealing a dimer structure with two binuclear fragments linked to each other by asymmetric chloride bridges. The electrochemical behavior of 2 in acetonitrile was studied by cyclic voltammetry at a Pt-electrode.

Graphical abstractThe heterometallic μ-vinylidene complex [Cp(CO)2ReCu(μ2-CCHPh)(μ2-Cl)]2 was obtained by interaction between Cp(CO)2ReCCHPh and CuCl. The molecular structure of complex [Cp(CO)2ReCu(μ2-CCHPh)(μ2-Cl)]2 has been determinated by X-ray diffraction analysis that has revealed a dimer structure. The electrochemical behavior of [Cp(CO)2ReCu(μ2-CCHPh)(μ2-Cl)]2 was studied by cyclic voltammetry in acetonitrile at a Pt-electrode.Figure optionsDownload full-size imageDownload as PowerPoint slide