Manganese(II) complexes of hydrazone based NNO-donor ligands and their catalytic activity in the oxidation of olefins |
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| Authors: | Rahman Bikas Massomeh Ghorbanloo Roya Sasani Ingo Pantenburg Gerd Meyer |
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| Institution: | 1. Faculty of Science, Department of Chemistry, University of Zanjan, Zanjan, Iranbikas_r@yahoo.com;3. Faculty of Science, Department of Chemistry, University of Zanjan, Zanjan, Iran;4. Department für Chemie, Institut für Anorganische Chemie, Universit?t zu K?ln, K?ln, Germany;5. Department of Chemistry, Iowa State University, Ames, IA, USA |
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| Abstract: | The reaction between tridentate NNO donor hydrazone ligands, (E)-2-cyano-N′-(phenyl(pyridin-2-yl)methylene)acetohydrazide (HL1) and (E)-2-cyano-N′-(1-(pyridin-2-yl)ethylidene)acetohydrazide (HL2), with MnCl2·4H2O in methanol resulted in Mn(HL1)Cl2(CH3OH)] (1) and Mn(HL2)Cl2(CH3OH)] (2). Molecular structures of the complexes were determined by single-crystal X-ray diffraction. All of the investigated compounds were further characterized by elemental analysis, FT-IR, TGA, and UV–Vis spectroscopy. These complexes were used as catalysts for olefin oxidation in the presence of tert-butylhydroperoxide (TBHP) as an oxidant. Under similar experimental conditions with equal manganese loading, the presence of Mn(HL2)Cl2(CH3OH)] (2) resulted in higher conversion than Mn(HL1)Cl2(CH3OH)] (1). |
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| Keywords: | Manganese(II) complex crystal structure spectroscopic studies oxidation catalyst |
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