Structural investigation of oxovanadium(IV) Schiff base complexes: X-ray crystallography, electrochemistry and kinetic of thermal decomposition

0448380 - FZÚ 2016 RIV NL eng J - Článek v odborném periodiku
Asadi, M. - Asadi, Z. - Savaripoor, N. - Dušek, Michal - Eigner, Václav - Shorkaei, M.R. - Sedaghat, M.
Structural investigation of oxovanadium(IV) Schiff base complexes: X-ray crystallography, electrochemistry and kinetic of thermal decomposition.
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. Roč. 136, Feb (2015), 625-634. ISSN 1386-1425. E-ISSN 1873-3557
Grant CEP: GA ČR(CZ) GAP204/11/0809
Institucionální podpora: RVO:68378271
Klíčová slova: Oxovanadium(IV) complexes * Schiff base * Kinetics of thermal decomposition * Electrochemistry
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.653, rok: 2015

A series of new VO(IV) complexes of tetradentate N2O2 Schiff base ligands (L1–L4), were synthesized and characterized by FT-IR, UV–vis and elemental analysis. The structure of the complex VOL1 DMF was also investigated by X-ray crystallography which revealed a vanadyl center with distorted octahedral coordination where the 2-aza and 2-oxo coordinating sites of the ligand were perpendicular to the ‘‘-yl’’ oxygen. The electrochemical properties of the vanadyl complexes were investigated by cyclic voltammetry. A good correlation was observed between the oxidation potentials and the elect ron withdrawing character of the substituents on the Schiff base ligands, showing the following trend: MeO < H < Br < Cl. We also studied the thermodynamics of formation of the complexes and kinetic aspects of their thermal decomposition.
Trvalý link: http://hdl.handle.net/11104/0250098