Acta Cryst. (2009). E65, m1291  [ doi:10.1107/S1600536809039658 ]

Di--aqua-bis(-pyridazine-4-carboxylato-²N:N')bis[triaqua(pyridazine-4-carboxylato-²O,O')lead(II)] dihydrate

W. Starosta and J. Leciejewicz

Abstract: The structure of the title compound, [Pb₂(C₅H₃N₂O₂)₄(H₂O)₆]·2H₂O, is composed of dimeric molecules in which two symmetry-related Pb²⁺ ions are bridged by a pair of two pyridazine-4-carboxylate ligand molecules via both heterocyclic N atoms and two water O atoms. Each Pb²⁺ ion is also coordinated by two carboxylate O atoms and three water O atoms, leading to a highly irregular coordination polyhedron around Pb²⁺. The dimers are interconnected by hydrogen bonds between coordinated and uncoordinated water molecules and the carboxylate O atoms. O-HN interactions are also present.

Online 3 October 2009

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