Synthesis and structural characterization of a binary metal cluster and a coordination polymer based on the mercury Bis(phenylselenolate) unit

Abstract

The versatile coordination chemistry of the Bis(phenylselenolate) (Hg(SePh)2) with Hg(SCN)2 salt allows the synthesis of a cluster and a 2D coordination polymer. The reaction at low temperature in dimethylformamide (dmf) affords single crystals containing neutral clusters with the formula [Hg8S(SCN)2(SePh)12(dmf)2] (1). Then, the 2D coordination polymer [Hg(SCN)(SePh)] (2) is obtained in comparable yielding. The use of bis(2-pyridylthio)methane as secondary ligand significantly improves the synthesis of 2, since it is synthesized at room temperature, in a short time and in a good yield. The effects of the weak interactions in the crystal packing were also analyzed.