Synthesis,structural characterization and catalytic potential of oxidovanadium(IV) and dioxidovanadium(V) complexes with thiazole-derived NNN-donor ligand |
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| Authors: | Massomeh Ghorbanloo Rahman Bikas Solmaz Jafari Marta S. Krawczyk Tadeusz Lis |
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| Affiliation: | 1. Department of Chemistry, University of Zanjan, Zanjan, Iran;2. Faculty of Science, Department of Chemistry, Imam Khomeini International University, Qazvin, Iran;3. Faculty of Pharmacy, Department of Analytical Chemistry, Wroclaw Medical University, Wroclaw, Poland;4. Faculty of Chemistry, University of Wroclaw, Wroclaw, Poland |
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| Abstract: | Reaction between the tridentate NNN donor ligand, (E)-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)benzo[d]thiazole (HL), and V2O5 in ethanol gave a new vanadium(V) complex, [VO2L] (1), while the similar reaction by using [VIVO(acac)2] as the metal source gave two different types of crystals related to compounds [VO2L] (1) and [VIVO(acac)L] (2). The molecular structures of the complexes were determined by single-crystal X-ray diffraction and spectroscopic characterization was carried out by means of FT-IR, UV–vis and NMR experiments as well as elemental analysis. The oxidovanadium(IV) and dioxidovanadium(V) species were used as catalyst precursors for olefin oxidation in the presence of hydrogen peroxide (H2O2) as an oxidant. Under similar experimental conditions, the presence of 1 resulted in higher oxidation conversion than 2. |
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| Keywords: | Oxidovanadium(IV) dioxidovanadium(V) thiazole-hydrazone H2O2 oxidation |
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