Structural characterization and antioxidant properties of Cu(II) and Ni(II) complexes derived from dicyandiamide

Kertmen S. N. , Gonul I., KÖSE M.

JOURNAL OF MOLECULAR STRUCTURE, cilt.1152, ss.29-36, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1152
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.molstruc.2017.09.067
  • Sayfa Sayıları: ss.29-36


New Cu(II) and Ni(II) complexes derived from dicyandiamide were synthesized and characterised by spectroscopic and analytical methods. Molecular structures of the complexes were determined by single crystal X-ray diffraction studies. In the complexes, the Cu(II) or Ni(II) ions are four-coordinate with a slight distorted square planar geometry. The ligands (L-(n)Pen and L-(n)Pen) derived from dicyandiamide formed via nucleophilic addition of alcohol solvent molecule in the presence Cu(II) or Ni(II ions. Complexes were stabilised by intricate array of hydrogen bonding interactions. Antioxidant activity of the complexes was evaluated by DPPH radical scavenging and CUPRAC methods. The complexes exhibit antioxidant activity, however, their activities were much lower than standard antioxidants (Vitamin C and trolox).