Preparation, properties and reactivity of gold complexes with some heterocyclic dithiocarbamates as ligands

The syntheses, properties and reactivity of the gold complexes AuRdtc, Au(RdtC)3, Au(Rdtc)2X and Au(RdtC)X2 (X = Cl, Br; Rdtc = piperidine-, morpholine-, thiomorpholine-, piperazine-, N-methylpiperazine-, N-phenylpiperazine- and 4-phenyl-piperidinedithiocarbamate) are reported. Elemental analysis, electrical conductance measurements, spectral (electronic and IR), magnetic susceptibility and thermogravimetric studies were used for characterization. The dithiocarbamato ligands exhibit both bidentate behaviour acting as S,S′-donors and monodentate behaviour acting as S-donors, depending on the type of the complex. The diamagnetic behaviour confirms the low-spin d8 configuration for Au(III) complexes and some metal-ligand and metal-halide stretches have been assigned.