[Au(S-C6F5)] and [Au(S-C6F4-CF3)]: reactivity, structural, DSC, and calculations studies

Reactions of HS-Arf (S-Arf = S-C6F5, S-C6F4-CF3) with AuI utilizing a new atom-economy method result in corresponding [Au(S-Arf)]n metal-organic coordination polymers, which were studied by DSC, SEM-EDX, TGA, IR and PL. Treatment of these complexes with pyridine under mild conditions results in a transformation of starting polymers into new [{Au(py)2}{Au(S-Arf)2}]n complexes of polymeric structure which were isolated and characterized by single crystal X-ray diffraction (SCXRD). The linear [Au(py)2]+ cations combine with linear [Au(S-Arf)2]– anions via Au···Au interactions into infinite chains. Such interactions were studied by quantum-chemical calculations. Treatment of [Au(S-C6F4-CF3)]n with DMSO gives crystals of [Au4(S-C6F4-CF3)4]n·nDMSO which has a unique polymeric structure.