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

Çağlar S., Aydemır 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)
  • Page Numbers: pp.131-138
  • Keywords: Catechol oxidation, Copper(II) complex, Crystal structure, Diclofenac
  • Erzincan Binali Yildirim University Affiliated: Yes


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. © 2013 Elsevier B.V. All rights reserved.