Four copper(II) diclofenac complexes with pyridine derivatives: Synthesis, crystal structures, spectroscopic properties, thermal analysis and catechol oxidase activities

Çağlar S., Aydemir I. E., Adiguzel E., Çağlar B., Demir S., Buyukgungor O.

INORGANICA CHIMICA ACTA, vol.408, pp.131-138, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 408
  • Publication Date: 2013
  • Doi Number: 10.1016/j.ica.2013.09.013
  • Journal Name: INORGANICA CHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.131-138
  • Keywords: Diclofenac Catechol oxidation, Copper(II) complex, Crystal structure, NONSTEROIDAL ANTIINFLAMMATORY DRUGS, MAGNETIC-PROPERTIES, DICOPPER COMPLEXES, BONDING PROPERTIES, METAL-COMPLEXES, H-BPMP, MONONUCLEAR, OXIDATION, LIGANDS, SODIUM
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

Four novel mononuclear copper(II) complexes [Cu(dicl)(2)(2-pic)(2)] 1, [Cu(dicl) 2(3-pic)(2)](2), [Cu(dicl)(2)(4-pic)(2)] 3 and [Cu(dicl) 2(2-ampy)(2)] 4 have been synthesized. The crystal structures of the complexes 2 and 3 have been determined by X-ray crystallography. X-ray structure analysis has shown that copper(II) ions have distorted octahedral geometry in 2 and 3 and diclofenac coordinates to Cu(II) ion as a deprotonated ligand through carboxylato oxygens. Four complexes have been characterized by elemental analysis and IR spectroscopy. Their thermal stabilities have been determined by TG/ DTA/ DTG techniques. Four mononuclear complexes have shown catalytic activity on the oxidation of 3,5-di-tert-butylcatechol to 3,5-di-tert-butylquinone exhibiting saturation kinetics at high substrate concentrations. (C) 2013 Elsevier B.V. All rights reserved.