Synthesis, characterization and crystal structure determination of a new vanadium(IV) Schiff base complex (VOL.sub.2./sub.) and investigation of its catalytic activity in the epoxidation of cyclooctene

0391676 - FZÚ 2014 RIV NL eng J - Journal Article
Grivani, G. - Tahmasebi, V. - Khalaji, A.D. - Fejfarová, Karla - Dušek, Michal
Synthesis, characterization and crystal structure determination of a new vanadium(IV) Schiff base complex (VOL₂) and investigation of its catalytic activity in the epoxidation of cyclooctene.
Polyhedron. Roč. 51, č. 1 (2013), s. 54-60. ISSN 0277-5387. E-ISSN 1873-3719
R&D Projects: GA ČR(CZ) GAP204/11/0809
Institutional support: RVO:68378271
Keywords : vanadium (IV) * Schiff base * single crystal * structure determination * catalysis * epoxidation
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 2.047, year: 2013

The vanadium(IV) Schiff base complex VOL2, L = 2-{(E)-[2-chloroethyl)imino]methyl}-6-methoxy phenol, has been synthesized by the reaction of a methanolic solution of VO(acac)2 with a methanolic solution of the Schiff base ligand, and it has been characterized using single-crystal X-ray crystallography, elemental analysis (CHN) and FT-IR spectroscopy. The crystal structure determination of this complex shows a deformed tetragonal pyramidal N2O3 coordination sphere of the vanadium center. The Schiff base ligand acts as a bidentate ligand with the two phenolato oxygen atoms and the two imine nitrogen atoms in trans positions. Non-classical inter- and intra-molecular hydrogen bonds of the type C-H...O have been found in the structure. The catalytic activity of the VOL2 Schiff base complex in the epoxidation of cyclooctene was investigated using different reaction parameters.
Permanent Link: http://hdl.handle.net/11104/0232592