Polynuclear Complexes of Gold(III) of the Composition ([Au(S2CNR2)2][AuCl4])_n (R = C4H9, R2 = (CH2)5): Synthesis, Supramolecular Structures, and Thermal Behavior

摘要

The interaction of binuclear cadmium dialkyldithiocarbamates [Cd2(S2CN R2)4] with solutions of AuCl3 in 2M HC1 gives polynuclear gold(III) complexes ([Au(S2CNR2)2][AuCl4])_n, where R = C4H9 (I) and R2 = (CH2)5 (II). The structures of the synthesized compounds solved by X-ray diffraction analysis are characterized by a complicated organization at the supramolecular level. The structures are based on polymer chains (I) and layers (II) involving isomeric cations [Au(S2CNR2)2]~+ and anions [AuCl4]~-. The thermal behavior of the synthesized complexes is studied by simultaneous thermal analysis including thermogravimetry and differential scanning calorimetry. The final product of the thermal transformations of the studied complexes is shown to be reduced metallic gold.