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.
Highlights
The multidimensional supramolecules self-assembled by metal ions and mutidentate organic ligands have been of great interest due to specific structural features and potential applications such as catalysts, electronic conductivities, optical properties, and molecular magnets [1,2,3,4,5,6,7,8,9]
Cyclic voltammetric data were obtained in DMSO solution with 0.10 M tetraethylammonium perchlorate (TEAP) as supporting electrolyte at 20.0 ± 0.1 C
Cyclic voltammetry of 1 undergoes two waves of a one-electron transfer corresponding to NiII/NiIII and NiII/NiI processes
Summary
The multidimensional supramolecules self-assembled by metal ions and mutidentate organic ligands have been of great interest due to specific structural features and potential applications such as catalysts, electronic conductivities, optical properties, and molecular magnets [1,2,3,4,5,6,7,8,9]. 2011, 12 of the supramolecular networks, intermolecular forces such as hydrogen bonds and - interactions are usually involved together with metal-ligand coordination bonds [10,11,12,13]. Self-assembly of macrocyclic complexes containing the square-planar geometry with aromatic and aliphatic polycarboxylate ligands has been proved to be good building blocks for the construction of coordination polymers and metallosupramolecules [15,16,17,18,19,20].
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