Vitamin B13 Complexes of Nickel(II) and Copper(II) with Ethanolamine: Syntheses,Crystal Structures,Spectroscopic and Thermal Studies |
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| Authors: | Okan Zafer Ye?silel Ertan ?ahin |
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| Institution: | 1. Eski?ehir Osmangazi University, Faculty of Arts and Sciences, Department of Chemistry, TR–26480, Eski?ehir–Turkey, Tel.: +90 222 2393750Eski?ehir Osmangazi University, Faculty of Arts and Sciences, Department of Chemistry, TR–26480, Eski?ehir–Turkey, Tel.: +90 222 2393750;2. Erzurum/Turkey, Atatürk University, Faculty of Arts and Sciences, Department of Chemistry |
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| Abstract: | Fac‐bis(ethanolamine)orotatonickel(II), Ni(HOr)(ea)2] and mer‐bis(ethanolamine)orotatocopper(II) dihydrate, Cu(HOr)(ea)2]· 2H2O were synthesized and characterized by elemental analysis, FT‐IR, UV‐Vis Spectroscopy and thermal analysis. In addition, their solid‐state structures were determined by single crystal X‐ray diffraction studies. Both the fac‐Ni(HOr)(ea)2] (1) and mer‐Cu(HOr)(ea)2]·2H2O (2) complexes are isomorphous and crystallize in the triclinic space group  . The Ni2+ and Cu2+ ions are coordinated by two neutral ea ligands and one orotate dianion in a distorted octahedral fashion. The ea ligand acts as a bidentate donor through the amine N and hydroxyl O atoms, while orotate dianion is coordinated through deprotonated N3 pyrimidine atom and carboxylate oxygen atom as a bidentate ligand. Thermal decompositions of the complexes are studied in over the range 20–600 °C on heating in a static air atmosphere. |
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| Keywords: | Nickel Copper Ethanolamine Orotic acid Orotato complexes Vitamin B13 |
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