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 succinic acid (C4H6O4) yields a 2D hydrogen-bonded polymer with formula [Ni(L)(C4H5O4)2] (1). This polymer complex has been characterized by X-ray crystallography, spectroscopy and cyclic voltammetry. The complex has a center of symmetry. 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 succinate ligand at the trans position. Compound 1 crystallizes in the monoclinic system C2/c with a = 14.8203(11), b = 12.3070(8), c = 17.4164(12) A, β = 107.356(6)°, V = 3032.1(4) A3, Z = 4. 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. The reaction of [Ni(L)]Cl2·2H2O (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane) with succinic acid (C4H6O4) yields a 2D hydrogen-bonded polymer with formula [Ni(L)(C4H5O4)2], which exhibits a high-spin nickel(II) ion in a O h environment with four nitrogen atoms of the macrocycle and two oxygen atoms of the succinate ligand at the trans position.
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