title: trans-Diaqua-bis(6-methoxycarbonyl-pyridazine-3-carboxyl-ato-κN,O)zinc(II) dihydrate.
abstract: In the title centrosymmetric complex, [Zn(C(7)H(5)N(2)O(4))(2)(H(2)O)(2)]·2H(2)O, the Zn(II) ion is coordinated in a trans mode by two symmetry-related bis-chelating 6-methoxycarbonyl-pyridazine-3-carboxyl-ate ligands via N and O atoms, and by two aqua ligand O atoms in axial positions, in a slightly distorted octa-hedral environment. In the crystal structure, complex mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds between coordinated and solvent water mol-ecules and carboxyl-ate O atoms, forming mol-ecular ribbons propagating along the a axis.
authors.affiliation: Institute of Nuclear Chemistry and Technology, ul. Dorodna 16, 03-195 Warszawa, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Starosta
authors.forename: Janusz
authors.initials: J
authors.lastname: Leciejewicz