Acta Crystallographica Section C

Crystal Structure Communications

Volume 65, Part 5 (May 2009)

metal-organic compounds

Acta Cryst. (2009). C65, m190-m194 [ doi:10.1107/S0108270109011263 ]

Nickel and zinc complexes with a monodentate heterocycle and tridentate Schiff base ligands: self-assembly to one- and two-dimensional supramolecular networks via hydrogen bonding

X.-H. Chen, Q.-J. Wu, Z.-Y. Liang, C.-R. Zhan and J.-B. Liu

Abstract: In the complex (morpholine)[2-hydroxy-N'-(5-nitro-2-oxidobenzylidene)benzohydrazidato]nickel(II), [Ni(C₁₄H₉N₃O₅)(C₄H₉NO)], (I), the Ni^II center is in a square-planar N₂O₂ coordination geometry. The complex bis[ [mu] -2-hydroxy-N'-(2-oxidobenzylidene)benzohydrazidato]bis[(morpholine)zinc(II)], [Zn₂(C₁₄H₁₀N₂O₃)₂(C₄H₉NO)₂], (II), consists of a neutral centrosymmetric dimer with a coplanar Zn₂( [mu] ₂-O)₂ core. The two Zn^II centers are bridged by phenolate O atoms. Each Zn^II center exhibits a distorted square-pyramidal stereochemistry, in which the four in-plane donors come from the O,N,O'-tridentate 2-hydroxy-N'-(2-oxidobenzylidene)benzohydrazidate(2-) ligand and a symmetry-related phenolate O atom, and the axial position is coordinated to the N atom from the morpholine molecule. There are intramolecular phenol-hydrazide O-HN hydrogen bonds present in both (I) and (II). In (I), square-planar nickel complexes are linked by intermolecular morpholine-morpholine N-HO hydrogen bonds, leading to a one-dimensional chain, while in (II) an infinite two-dimensional network is formed via intermolecular hydrogen bonds between the coordinated morpholine NH groups and the uncoordinated phenolate O atoms.

Formula: [Ni(C₁₄H₉N₃O₅)(C₄H₉NO)] and [Zn₂(C₁₄H₁₀N₂O₃)₂(C₄H₉NO)₂]


	Structure factor file (CIF format) (202.9 kbytes) [ doi:10.1107/S0108270109011263/mx3009Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (195.9 kbytes) [ doi:10.1107/S0108270109011263/mx3009IIsup3.hkl ] Contains datablock II

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