A new class of binuclear rhenium(II) halide species containing a strong metal–metal bond: the chemistry and structure of complexes of the type Re2X4(Pr3)4

Abstract

A new class of tertiary phosphine complexes of the type Re₂Cl₄(PR₃)₄ have been isolated from the reation of Re₃Cl₉ or the Re₂Cl₈ ^2– anion with the appropriate phosphine, and a single crystal X-ray structure analysis has shown Re₂Cl₄(PEt₃)₄ to posses a strong (evidently quadruple) rhenium–rhenium bond and eclipsed rotational configuration.