Acta Cryst. (2007). E63, m778-m779  [ doi:10.1107/S160053680700709X ]

catena-Poly[[diiodidomercury(II)]--N,N'-p-phenylenebis(pyridine-3-carboxamide)-²N:N']

Y.-G. Zhu and F. Gao

Abstract: Crystals of the title compound, [HgI₂(C₁₈H₁₄N₄O₂)]_n, were obtained by the reaction of HgI₂ and p-phenylene-bis(pyridine-3-carboxamide) in DMF. The asymmetric unit is composed of only half of the formula unit; the mercury atom lies on a crystallographic twofold rotation axis, and there is an inversion centre at the centre of the benzene ring. Each Hg^II atom is coordinated by two I atoms and two N atoms from two p-phenylene-bis(pyridine-3-carboxamide) (bpfb) ligands, in a distorted tetrahetral geometry. Bpfb acts as a bifunctional bridging ligand, linking Hg^II atoms into a one-dimensional chain. Hydrogen-bonding interactions between the O atom and the H atoms of bpfb ligands result in a two-dimensional supramolecular network.

Online 16 February 2007

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