Acta Crystallographica Section C

Crystal Structure Communications

Volume 65, Part 6 (June 2009)

metal-organic compounds

sq3191 scheme

Acta Cryst. (2009). C65, m211-m214 [ doi:10.1107/S0108270109015066 ]

catena-Poly[[[tetraaquazinc(II)]--4-amino-3,5-di-3-pyridyl-4H-1,2,4-triazole] sulfate monohydrate] and poly[[bis(-4-amino-3,5-di-4-pyridyl-4H-1,2,4-triazole)diaquacopper(II)] dinitrate octahydrate]

H.-Y. Wang, J.-P. Ma, R.-Q. Huang and Y.-B. Dong

Abstract: The isomeric bent triazole-containing ligands 4-amino-3,5-di-3-pyridyl-4H-1,2,4-triazole (L1) and 4-amino-3,5-di-4-pyridyl-4H-1,2,4-triazole (L2) have been used to create the two novel title complexes catena-poly[[[tetraaquazinc(II)]- [mu] -4-amino-3,5-di-3-pyridyl-4H-1,2,4-triazole] sulfate monohydrate], {[Zn(C₁₂H₁₀N₆)(H₂O)₄]SO₄·H₂O}_n, (I), and poly[[diaquabis( [mu] -4-amino-3,5-di-4-pyridyl-4H-1,2,4-triazole)copper(II)] dinitrate octahydrate], {[Cu(C₁₂H₁₀N₆)₂(H₂O)₂](NO₃)₂·8H₂O}_n, (II). The Zn^II and Cu^II atoms are all six-coordinated in approximately octahedral environments. Compound (I) presents a sinusoidal chain generated by ZnO₄ cores which are bridged by L1 ligands in a cisoid conformation. These sinusoidal chains are bound to each other by O-HO hydrogen bonds between coordinated water molecules of neighboring chains into a two-dimensional network. These layers stack in an ...ABAB... sequence and are further linked into a three-dimensional framework through O-HN hydrogen bonds between coordinated water molecules and the N atoms of the triazole rings. In (II), the Cu^II centers are bridged by the L2 ligands to form a two-dimensional network with square grids. All of the two-dimensional nets also stack alternately along the crystallographic a axis. Neighboring layers are further linked into a three-dimensional framework via interlayer N-HN hydrogen bonds between -NH₂ groups of the triazole rings and the N atoms in the triazole rings.

Formula: [Zn(C₁₂H₁₀N₆)(H₂O)₄]SO₄·H₂O and [Cu(C₁₂H₁₀N₆)₂(H₂O)₂](NO₃)₂·8H₂O


	Structure factor file (CIF format) (164.1 kbytes) [ doi:10.1107/S0108270109015066/sq3191Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (342.3 kbytes) [ doi:10.1107/S0108270109015066/sq3191IIsup3.hkl ] Contains datablock II

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