Different connectivities in supramolecular aggregates of trinuclear gold(I) complexes with the sacconi-ligand N(CH2CH2PPh2)3

Article abstract of DOI:10.1515/znb-1997-1206

Trichloro-[tris(2-(diphenylphosphanyl)ethyl)amine]-trigold(I) (1) has been prepared by treating the tripod ligand tris(2-(diphenylphosphanyl)ethyl)amine with three equivalents of chloro(dimethylsulfide)gold(I) in dichloromethane. Treatment of solutions of 1 in dichloromethane with potassium bromide or potassium iodide resulted in the formation of the tribromo (2) and triiodo (3) derivatives. All compounds were crystallized and X-ray structure analyses have been performed. Complexes 1 and 2 are isomorphous and crystallize in the rhombohedral space group R3?. An aggregation into layers through Au-X' contacts of 3.734 (X = Cl) and 3.711 ? (X = Br), but no Au-Au contacts were observed. Compound 3 on the other hand crystallizes in the monoclinic space group P2₁/c. The molecules are linked into strings through short intermolecular Au-Au contacts of 3.1072 ?.