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Int. J. Mol. Sci. 2011, 12(4), 2232-2241; doi:10.3390/ijms12042232
Article

One-Dimensional Hydrogen-Bonded Infinite Chain from Nickel(II) Tetraaza Macrocyclic Complex and 1,2-Cyclopentanedicarboxylate Ligand

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Received: 14 February 2011 / Revised: 24 March 2011 / Accepted: 25 March 2011 / Published: 1 April 2011
(This article belongs to the Special Issue Molecular Self-Assembly 2011)
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Abstract

The reaction of [Ni(L)]Cl2·2H2O (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo [14,4,01.18,07.12]docosane) with trans-1,2-cyclopentanedicarboxylic acid (H2-cpdc) yields a 1D hydrogen-bonded infinite chain with formula [Ni(L)(H-cpdc-)2] (1). This complex has been characterized by X-ray crystallography, spectroscopy and cyclic voltammetry. The crystal structure of 1 exhibits a distorted octahedral geometry about Ni atom with four nitrogen atoms of the macrocycle and two oxygen atoms of the H-cpdc- ligand at the axial position. Compound 1 crystallizes in the monoclinic system P21/c with a = 8.7429(17), b = 10.488(2), c = 18.929(4) Å, β = 91.82(2), V = 1734.8(6) Å3, Z = 2. Electronic spectrum of 1 reveals a high-spin octahedral environment. Cyclic voltammetry of 1 undergoes two waves of a one-electron transfer corresponding to NiII/NiIII and NiII/NiI processes.
Keywords: 1D hydrogen-bonded infinite chain; nickel(II) complex; tetraaza macrocycle; trans-1,2-cyclopentanedicarboxylic acid; distorted octahedral geometry 1D hydrogen-bonded infinite chain; nickel(II) complex; tetraaza macrocycle; trans-1,2-cyclopentanedicarboxylic acid; distorted octahedral geometry
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Lim, I.-T.; Choi, K.-Y. One-Dimensional Hydrogen-Bonded Infinite Chain from Nickel(II) Tetraaza Macrocyclic Complex and 1,2-Cyclopentanedicarboxylate Ligand. Int. J. Mol. Sci. 2011, 12, 2232-2241.

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