Acta Cryst. (2009). E65, m1106-m1107  [ doi:10.1107/S1600536809032103 ]

Bis(4-amino-3,5-di-2-pyridyl-1,2,4-triazole-²N¹,N⁵)diaquazinc(II) dinitrate

J. Hua, L. Gao and B. Li

Abstract: The asymmetric unit of the title compound, [Zn(C₁₂H₁₀N₆)₂(H₂O)₂](NO₃)₂, contains one-half of the complex molecule and one NO₃^- anion. The Zn^II ion displays a distorted tetragonal-pyramidal geometry with four N atoms from two chelating 4-amino-3,5-di-2-pyridyl-1,2,4-triazole (2-bpt) ligands in the basal plane and one water molecule occupying the apical site. Another water molecule at the opposite of the apical site has a weak interaction with the Zn^II ion [Zn-O = 2.852 (5) Å]. The Zn^II ion and the two water molecules lie on a twofold rotation axis. An extensive system of hydrogen bonds involving the NH₂ groups of the 2-bpt ligands, water molecules and nitrate anions links all residues into a three-dimensional network.

Online 22 August 2009

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