Interaction of arylmetal compounds of group 1B with copper(I) and silver(I) trifluoromethanesulphonate; a novel biaryl synthesis and a route to hexanuclear aryl–CuAg, –AgAu, and –CuAu clusters

Abstract

Whereas selective biaryl formation is observed when arylcopper compounds 4-MeC₆H₄Cu, 2-Me₂NC₆H₄Cu, and 2-Me₂NCH₂C₆H₄Cu are treated in exact 1:1 molar ratio with (CF₃SO₃)Cu, reactions of 2-Me₂NC₆H₄M (M = Cu or Au) with (CF₃SO₃)Cu (2:1) and of Ar₄Au₂Li₂ with (CF₃SO₃)Cu or (CF₃SO₃)Ag (1:2) afford novel hexanuclear cluster compounds of the type Ar₄M₄M′₂(CF₃SO₃)₂.