Abstract
The title compound, (C4H14N2)[HgCl4], contains layers of tilted corner-sharing chloromercurate octahedra. Each HgII ion lies on a center of symmetry, and has four long bonds to the halide ions, forming puckered sheets parallel to the bc plane plus two short bonds to halide ions axial to the sheets, completing a tetragonally compressed octahedral coordination. Adjacent sheets have axial halide ions in an eclipsed conformation. The diammonium ions provide links between sheets, hydrogen bonding to the halides. The organic chains have the two ends of the diammonium ions equivalent by a center of symmetry, with C4 chains trans around the central bond and gauche for N versus C positioning around each terminal C—C bond. No phase transition before the decomposition temperature has been detected by differential scanning calorimetry.
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