Oxidovanadium(V) complexes containing hydrazone based O,N,O-donor ligands: Synthesis, structure, catalytic properties and theoretical calculations

Hosseini-Monfared H., Bikas R., Mahboubi-Anarjan P., Blake A. J., Lippolis V., Arslan N. B., ...Daha Fazla

POLYHEDRON, cilt.69, ss.90-102, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 69
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.poly.2013.11.020
  • Dergi Adı: POLYHEDRON
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Index Chemicus (IC)
  • Sayfa Sayıları: ss.90-102
  • Anahtar Kelimeler: Oxidovanadium(V), Molecular structure, Cyclic voltammetry, Spectroscopy, DPI calculation, Catalyst, SUBSTITUTED N-SALICYLIDENEHYDRAZIDES, MODELING SUPRAMOLECULAR INTERACTIONS, VANADIUM(V) COMPLEXES, CRYSTAL-STRUCTURES, OXOVANADIUM(V) COMPLEXES, MAGNETIC-PROPERTIES, METAL-COMPLEXES, SCHIFF-BASE, TRIDENTATE, OXIDATION
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

Two new mono oxidovanadium(V) complexes, [VOL1(OEt)] (1) and [VOL2(OMe)] (2), of the tridentate Schiff base hydrazone-type O,N,O-donor ligands H2L1 and H2L2, obtained by monocondensation of 3-hydroxy-2-naphthohydrazide with 5-bromo-2-hydroxybenzaldehyde and benzoylacetone, respectively, have been synthesized starting from VO(acac)(2) [H2L1 = (E)-N'-(5-bromo-2-hydroxybenzylidene)-3-hydroxy-2-naphthohydrazide; H2L2 = (E)-3-hydroxy-N'-((Z)-4-hydroxy-4-phenylbut-3-en-2-ylidene)-2-naphthohydrazide]. Single-crystal X-ray structure analysis revealed for both complexes a slightly distorted square-based pyramidal NO4 coordination environment around the metal centre, with the aroylhydrazone Schiff bases acting as O,N,O-tridentate, dinegative ligands. The complexes were also characterized by spectroscopic methods in the solid state (IR) and in solution (UV-Vis, H-1 NMR) and by cyclic voltammetric experiments in DMSO, and their properties were interpreted by means of DFT theoretical calculations.