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Vanadium precursors and the type of complexes formed with Schiff base ligand composed of 5-bromosalicylaldehyde and 2-hydroxybenzhydrazide – Structure and characterization by Anna Jurowska; Wiktoria Serafin; Maciej Hodorowicz; Krzysztof Kruczała; Janusz Szklarzewicz is a Chemistry article available to read on EtoBox.
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A C T Five vanadium(IV) and (V) complexes, with Schiff base ligand, based on three vanadium precursors such as [VO (acac) 2 ], VOSO 4 and V 2 O 5 were synthesized and characterized. Only the last vanadium substrate, in a very simple synthesis, with the addition of triethylamine, results in formation of the crystalline product for which crystal structure measurements were performed. Two vanadium(IV) complexes were stabilized by adding a coligand (5-chloro-1,10-phenantroline or 2,2 ′ -bipyridine). Three complexes of vanadium(V) were obtained, one dioxido and two oxido, with an EtO -or MeO -molecule as a ligand (depending on the solvent used in the synthesis). A single X-ray crystal study revealed that the anionic dioxido complex poses a distorted tetragonal pyramid geometry of vanadium. For all complexes, the elemental analyses, magnetic measurements, including EPR spectra for V(IV) complexes, and IR and UV-Vis spectra are presented and discussed. The relationship between the vanadium precursor used and the complex obtained has been described in detail.
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- Author
- Anna Jurowska; Wiktoria Serafin; Maciej Hodorowicz; Krzysztof Kruczała; Janusz Szklarzewicz
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Chemistry (Physical Sciences)