SYNTHESIS, STRUCTURAL ELUCIDATION AND ELECTROCHEMICAL BEHAVIOR OF SOME OXIME-PHENYLALANINE MIXED LIGAND COMPLEXES

Oztoprak U. T., PERÇİN ÖZKORUCUKLU S., Bastemur G., Tuncmen M. E., Karipcin F.

BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA, cilt.34, sa.3, ss.543-556, 2020 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Sayı: 3
  • Basım Tarihi: 2020
  • Doi Numarası: 10.4314/bcse.v34i3.10
  • Dergi Adı: BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, CAB Abstracts, Veterinary Science Database, Directory of Open Access Journals
  • Sayfa Sayıları: ss.543-556
  • Anahtar Kelimeler: amino acid, electrochemical characterization, mixed ligand complexes, Oxime, phenylalanine
  • İstanbul Üniversitesi Adresli: Evet

Özet

Four new mixed ligand complexes Me(II)/phenylalanine (phe)/HL [HL =4-(4-bromophenyl-aminoisonitrosoacetyl)biphenyl and Me = Co, Ni, Cu, Zn] were synthesized. These complexes are formulated as: [CoL(phe)(H2O)(2)], [NiL(phe)(H2O)(2)], [CuL(phe)(H2O2] and [ZnL(phe)(H2O)(2)]. All the compounds were characterized by elemental analyses, FT-IR, magnetic susceptibility measurements, TG/DTA and cyclic voltammetry (CV) experiments. IR spectral data confirmed the coordination of the oxime ligand to the metal ions through the oxime and carbonyl oxygen. The geometrical structures of the complexes have been found to be octahedral. The measured molar conductance values of the complexes in DMF are in agreement with the nonelectrolytic nature ofthe complexes. The elemental analyses confirm a 1:1:1 [metal:HL:L(phenylalanine)] molar ratio. Thermal behavior of the compound was investigated by thermal gravimetric analysis (TG) and differential thermal analysis (DTA) techniques. All the complexes were transformed into metal oxides after thermal degradation. The electrochemical properties of both ligand and their complexes were analyzed by cyclic voltammetry (CV) using glassy carbon electrode in DMF solution containing 0.1 M TBAP as supporting electrolyte.