Synthesis, structure, and electronic spectroscopy of neutral, dinuclear gold(I) complexes. Gold(I)-gold(I) interactions in solution and in the solid state

Abstract

A series of neutral, dinuclear gold(I) complexes containing phosphine and thiolate ligands have been synthesized and characterized by elemental analysis and by 1 H and 31 P NMR and UV-visible spectroscopy. Crystal structures of two of the complexes are reported. [Au 2 (p-tc) 2 (dppb)] (4) crystallizes in the triclinic space group P1 (Z=2) with unit cell dimensions a=10.757(2) A, b=13.177(2) A, c=14.630(3) A, α=82.23(1) o , β=83.16(1) o , and γ=75.42(1) o ; R=0.0286. [Au 2 (p-tc) 2 (dpppn)] (5) crystallizes in the monoclinic space group P2 1 /n (Z=4) with unit cell dimensions a=12.007(1) A, b=25.292(5) A, c=13.421(2) A, andβ=94.92(1) o ; R=0.0432