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Crystals of the adduct Hg(SCN) 2  · 2HgCl 2 ·2C 6 H 12 N 4  were obtained from an aqueous solution containing 0.1 mol/l hexamethylenetetramine and 0.05 mol/l potassium thiocyanate and mercury(II) chloride. The compound crystallizes monoclinically; space group P2 1 /n, a = 767.3(4), b = 1854.7(7), c = 872.5(7) pm, and β = 101.48(5)°. The structure consists of a net­ work of chains -Cl-Hg-Cl-Hg- and -(Cl-Hg-) 2 NCS-Hg-SCN-(Hg-Cl) 2 -which share common Hg atoms and form distorted hexagonal and trigonal channels. The hexamethylenetetramine molecules lie in the hexagonal channels. They act as μ 3  bridging ligands, forming bonds to two Hg atoms in a given layer, and an additional bond to a Hg atom a neighbouring layer.

zeitschrift für naturforschung b

Kristallstruktur des „supramolekularen“ Quecksilber(II)chlorid-thiocyanat- Hexamethylentetramin-Addukts Hg(SCN) 2  · 2HgCl 2  · 2C 6 H 12 N 4  / Crystal Structure of the “Supramolecular” Mercury(II) Chloride Thiocyanate Hexam ethylenetetram ine Adduct Hg(SCN) 2  · 2HgCl 2  · 2C 6 H 12 N 4