Different coordination modes of the 1,1,1-tris( diphenylphosphinomethyl) ethane ligand in gold( I) and gold( III) complexes

Article abstract of DOI:10.1016/0022-328X(95)06025-R

The synthesis of pentafluorophenyl mono-or poly-nuclear gold(I) and/or gold(III) complexes with the tridentate ligand (PPh₂CH₂)₃CCH₃ (tdppme) are described in different coordination modes not represented thus far. The reaction of the free phosphine with gold(I) or gold(III) derivatives in different molar ratios gives [{Au(C₆F₅)}₃( μ₃-η³-tdppme)], [{Au(C₆F₅)}₂( μ-η²-tdppmeO)], [Au(C₆F₅)₃(η¹-tdppme)] or [Au(C₆F₅)₂(η²-tdppme)]Cl. The mononuclear derivatives further react with gold(I) or gold(III) species giving rise to di-or tri-nuclear complexes which contain the triphosphine acting as a μ₃-η³, μ-η², μ-η³ or η² ligand.