Complexes with S-donor ligands .4. Mono- and di-homo- and hetero-nuclear gold(I), silver(I), and palladium(II) complexes with 2-(methylthio)pyridine, pyridine-2(1H)-thione, and benzoxazole-2(3H)-thione. Some examples of the use of complexes as ligands

AgClO4 reacts with bidentate ligands 2-(methylthio)pyridine (SMepy) or complexes PPN[Au(Spy)(2)] [PPN = N(PPh(3))(2), HSpy = pyridine-2(1H)-thione) or PPN[Au(Sbz)(2)] (HSbz = benzoxazole-2(3H)-thione), themselves acting as ligands, to give dinuclear complexes [Ag-2(mu-SMepy)(2)](ClO4)(2) (1), [AgAu(mu-Spy)(2)] (2), or [AgAu(mu-Sbz)(2)] (3), respectively. By treating 1 with [AuCl(tht)] (tht = tetrahydrothiophene), [Au(SMepy)(tht)]ClO4 (4) is obtained which, in turn, reacts with SMepy to give [Au(SMepy)(2)]ClO4 (5). Similarly, [PdCl2(NCPh)(2)] reacts with SMepy in 1:1 molar ratio to give [Pd2Cl2(mu-Cl)(2)(SMepy)(2)] (6) which reacts with SMepy in 1:2 molar ratio to give [PdCl2(SMepy)(2)] (7). On the other hand, HSpy reacts with Ag2CO3 to give [Ag-2(mu-Spy)(2)] (8), and (SMepyH)ClO4 reacts with [Au(acac)PPh(3)] (acacH = acetylacetone)to give [Au(SMepy)PPh(3)]ClO4 (9).