Synthesis,spectral and magnetic properties,and crystal structures of copper(II)2-methylthionicotinate adducts with chelating ligands |
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| Institution: | 1. Department of Inorganic Chemistry, Slovak Technical University, 812 37 Bratislava, Slovak Republic;2. Department of Physical Chemistry, Slovak Technical University, 812 37 Bratislava, Slovak Republic;3. Faculty of Chemistry, University of Wroclaw, F. Joliot Curie 14, 50 383 Wroclaw, Poland;1. Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy;2. Dipartimento di Scienze Matematiche, Fisiche ed Informatiche, Università di Parma, Parco Area delle Scienze 7/a, 43124 Parma, Italy;1. Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland;2. Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland;1. Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemicals Institute, PO Box 14975-112, Tehran, Iran;2. Department of Chemistry, University Campus 2, University of Gilan, Rasht, Iran;3. Department of Chemistry, School of Science, Alzahra University, PO Box 1993891176, Vanak, Tehran, Iran;1. Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;2. Faculty of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;3. Center for Molecular Systems, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;4. Policy Alternatives Research Institute, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;5. Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan |
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| Abstract: | The synthesis and characterization of Cu2(2-MeSnic)4(H2O)2], Cu(2-MeSnic)2(en)], Cu(en)2(H2O)2](2-MeSnic)2 and Cu(dien)(H2O)2](2-MeSnic)2 (where 2-MeSnic=2-methylthionicotinate, en=ethylenediamine, dien=diethylenetriamine) is reported. The characterizations were based on elemental analysis, infrared, electronic and EPR spectra, and magnetic susceptibility measurements over a temperature range of 1.9–300 K. The available evidence supports a dimeric structure for Cu2(2-MeSnic)4(H2O)2] and for Cu(en)2(H2O)2](2-MeSnic)2 a tetragonal-bipyramidal environment about the copper(II) atom. The other two complexes were studied also by X-ray analysis. The Cu(dien)(H2O)2](2-MeSnic)2 crystallizes in the monoclinic system. The copper(II) atom has a square-pyramidal arrangement, with three nitrogen atoms of the tridentate diethylenetriamine and one water molecule in the base of the pyramid, and the remaining water molecule occupies the apical position. The copper(II) atom deviates from the basal plane by 0.1164(5) Å toward the water molecule in the apical position. The copper(II) atom in Cu(2-MeSnic)2(en)] is coordinated by two symmetry-dependent nitrogen atoms of ethylenediamine and by two pairs of non-equivalently coordinated carboxyl oxygen atoms of two symmetry-dependent 2-methylthionicotinates with CuO bond distances of 1.975(2) and 2.564(2) Å, respectively, resulting in a highly distorted tetragonal-bipyramidal coordination. |
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