Influence of counter-anion on the coordination geometry of manganese(II) complexes with methyl-2-pyrazinecarboximidate ligand |
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| Authors: | Vahid Amani Naghmeh Faal Hamedani |
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| Institution: | 1. Department of Chemistry, Farhangian University, Tehran, Iran;2. Department of Chemistry, Faculty of Valiasr, Tehran Branch, Technical and Vocational University (TVU), Tehran, Iran |
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| Abstract: | Two new complexes of Mn(2-MPyzCI)2Cl2].H2O (1) and Mn(2-MPyzCI)2(H2O)2](NO3)2 (2) were synthesized from the reaction of MnX2.4H2O (X=Cl? and NO3?) with 2-cyanopyrazine in methanolic solution. The chelating methyl pyrazine-2-carboximidate (2-MPyzCI) ligand is formed via the methanolysis of 2-cyanopyrazine. Although coordination environment around manganes(II) ions is similar, but these complexes are different in geometrical position of 2-MPyzCI ligands. As both compounds are synthesized under the same reaction conditions, the only difference between these two complexes are counter ions and changing of geometrical position of ligands can be considered as a result of influence of the counter-anions on the molecular structures. |
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| Keywords: | Crystal structure counter-ion effect methyl pyrazine-2-carboximidate ligand Mn (II) ion |
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