One-dimensional coordination polymers of Co(II) and Cd(II)-squarate with 2-methylimidazole and 4(5)-methylimidazole ligands |
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| Authors: | Hakan Erer Okan Zafer Ye?ilel Orhan Büyükgüngör |
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| Institution: | 1. Eski?ehir Osmangazi University, Faculty of Arts and Sciences, Department of Chemistry, 26480 Eski?ehir, Turkey;2. Ondokuz May?s University, Faculty of Arts and Sciences, Department of Physics, 55139 Samsun, Turkey |
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| Abstract: | Two new mixed-ligand coordination polymers, {Co(μ1,3-sq)(H2O)2(2-Meim)2]·2(2-Meim)}n (1) and Cd(μ1,3-sq)(H2O)2(4(5)-Meim)2]n (2), (sq = squarate, 2-Meim = 2-methylimidazole, 4(5)-Meim = 5-methylimidazole) have been synthesized and structurally characterized by X-ray crystallography. The spectral (IR and UV–Vis) and thermal analyses are also reported. The Co(II) and Cd(II) ions are distorted octahedrally coordinated by four oxygen atoms of two O1–O3-bridging squarate ligands and two trans-aqua ligands, and by two nitrogen atoms of the trans-imidazole (2-Meim or 4(5)-Meim) ligands. The structures of 1 and 2 consist of one-dimensional chains of μ-1,3-squarato bridged metal(II) complex units. These chains are held together by hydrogen bonding interactions, forming three-dimensional framework. |
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| Keywords: | Supramolecular complexes Polynuclear complexes Squarate complexes Coordination polymers Methylimidazole complexes |
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