Synthesis, characterization, crystal structure, catalytic activity in oxidative bromination, and thermal study of a new oxidovanadium Schiff base complex containing O, N-bidentate Schiff base ligand

0438605 - FZÚ 2015 RIV GB eng J - Journal Article
Grivani, G. - Tahmasebi, V. - Khalaji, A.D. - Eigner, Václav - Dušek, Michal
Synthesis, characterization, crystal structure, catalytic activity in oxidative bromination, and thermal study of a new oxidovanadium Schiff base complex containing O, N-bidentate Schiff base ligand.
Journal of Coordination Chemistry. Roč. 67, č. 22 (2014), s. 3664-3677. ISSN 0095-8972. E-ISSN 1029-0389
Institutional support: RVO:68378271
Keywords : oxidovanadium(IV) * Schiff base * single crystal * oxidative bromination
Subject RIV: CA - Inorganic Chemistry
Impact factor: 2.012, year: 2014

A new oxidovanadium(IV) Schiff base complex, VOL2 (1), HL = 2-{(E)-[2-(bromoethyl)imino]methyl}-6-methoxy phenol, containing ethyl bromide pendant group was synthesized by direct reaction of HL and VO(acac)2 in the ratio of 2 : 1 in methanol at reflux. The Schiff base ligand and its vanadyl complex were characterized by FT-IR spectra and CHN analysis. Additionally, the Schiff base ligand has been characterized by 1H NMR spectroscopy. The crystal structure of 1 was also determined by single-crystal X-ray analysis, showing the distorted square-pyramidal N2O3 coordination around vanadium(IV). The catalytic activity of 1 was studied in the oxidative bromination of 2-nitrophenol as a model substrate, and different reaction parameters were investigated. The oxidative bromination of some organic compounds in the presence of 1 in optimal conditions showed that it was an effective and selective catalyst in those optimal conditions.
Permanent Link: http://hdl.handle.net/11104/0242020