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In the title compound, [Zn(C 4 H 11 N 2 ) 2 (S 2 O 3 ) 2 ]·2H 2 O, two thio-sulfate ions coordinate to the zinc(II) atom through the terminal S atoms. The tetra-hedral coordination around the Zn II ion is completed by ligating to two N atoms of two piperazinium ions. The remaining two N atoms of the piperazinium ions are diprotonated and do not coordinate to the metal centre. In the crystal, however, they are involved in N-H⋯O water and N-H⋯Osulfato hydrogen bonds. Together, a series of N-H⋯O and O-H⋯O hydrogen bonds, involving the O atoms of the thio-sulfate ions and the water mol-ecules as acceptors and the hydrogen atoms of the piperazinium ions and the water mol-ecules as donors, form a three-dimensional supra-molecuar structure. Within this framework there are a number of intra- and inter-molecular C-H⋯O and C-H⋯S contacts present.

Crystal structure of bis(piperazin-1-ium-κN 4)bis(thiosulfato-κS)zinc(II) dihydrate

Crystal structure of bis(piperazin-1-ium-κN ⁴)bis(thiosulfato-κS)zinc(II) dihydrate