MULTIDONOR LIGANDS, 1 - SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF GOLD(I) AND SILVER(I) COMPLEXES OF THE MULTIDONOR LIGAND 2-(PHENACYLTHIO)PYRIDINE - CRYSTAL-STRUCTURES OF [(AUPPH3)(PY(SCH2C(O)PH)-2)](CLO4)AND [(AGPPH3)(OCLO3)(PY(SCH2C(O)PH)-2)]

The ligand properties of 2-(phenacylthio)pyridine towards gold(I) and silver(I) have been investigated. From the reactions of the ligand wit h acetone solutions of [M(PPh3)(acetone)]ClO4 (M = Ag, Au) under vario us experimental conditions, complexes [(AuPPh3)(n)(py{SCH2C(O)Ph}-2)]( ClO4)(n), and [(AgPPh3)(n)(OClO3)(n){py(SCH2C(O)Ph)-2}](n = 1-3) have been obtained. The crystal structures of the complexes [(AuPPh3){py{SC H2C(O)Ph}-2}]ClO4 and [(AgPPh3)(OClO3)-{py{SCH2C(O)Ph}-2}] have been d etermined by X-ray diffraction. In the cationic gold complex the metal is linearly coordinated to nitrogen and phosphorus, whereas the corre sponding silver complex displays a trigonal planar geometry with pyrid ine, phosphane and perchlorato ligands.