New Group IB metal chemistry. VII. Reactions between copper arylacetylides and some iridium(I) and rhodium(I) complexes

Abstract

The hexanuclear cluster complexes Ir₂Cu₄(C₂Ar)₈(PPh₂R)₂ (Ar = Ph, C₆H₄Me-p, C₆H₄F-p or C₆F₅, R = Ph; Ar = Ph or C₆F₅, R = Me) are formed in reactions between IrCl(CO)(PPh₂R)₂ and CuC₂Ar. The rhodium analogues Rh₂Cu₄(C₂Ar)₈(PPh₂R)₂ (Ar = Ph_, C₆H₄Me-p, C₆H₄F-p or C₆F₅; R = Ph or Me) were obtained with RhC1(CO)(PPh₂R)₂ or RhC1(PPh₃)₃ (Ar = C₆F₅ only).From two of the reactions, IrCu₃(C₂Ph₃)₃ and IrCu(C₂C₆F₅)₄/PPh₃)₃ were also isolated. Further reactions of the clusters with Fe₂(C0)₉ have given the octanuclear complexes Ir₂Cu₄Fe₂-(C₂Ar)₈(C0)₈(PPh₃)₂(Ar=Ph or C₆H₄Me-p).