Mn(II), Co(II) and Ni(II) complexes of 4-(2-thiazolylazo)resorcinol: Syntheses, characterization, catalase-like activity, thermal and electrochemical behaviour

Karipcin F., Dede B., Percin-Ozkorucuklu S., Kabalcilar E.

DYES AND PIGMENTS, cilt.84, sa.1, ss.14-18, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 84 Sayı: 1
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.dyepig.2009.06.010
  • Dergi Adı: DYES AND PIGMENTS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.14-18
  • Anahtar Kelimeler: Resorcinol, Azo dyes, catalase-like activity, Magnetic moment, Thermal analysis, COPPER(II) COMPLEXES, MANGANESE(II) COMPLEXES, CRYSTAL-STRUCTURES, SOLID COMPLEXES, METAL-COMPLEXES, SCHIFF-BASES, VIC-DIOXIME, AZO DYES, LIGANDS, ACID
  • İstanbul Üniversitesi Adresli: Hayır

Özet

Manganese(II), cobalt(II) and nickel(II) acetates react with the ligand, 4-(2-thiazolylazo)resorcinol, to form complexes of general formula [ML2] for M=Co(II), Ni(II)and [ML2]center dot 2H(2)O for M=Mn(II). Each of the azo complexes was characterized using elemental analysis, electrolytic conductance, UV-visible spectroscopy and magnetic susceptibility. An octahedral structure is proposed for all complexes prepared, which molar conductance data revealed to be non-electrolytes. IR spectra reveal that the ligand is coordinated to the metal ions in a tridentate manner via the resorcinol OH, azo N and thiazole N groups as donor sites. The electrochemical behaviour of the ligand and its complexes were obtained by cyclic voltammetry. Thermal decomposition studies were undertaken to secure additional information on the structure of the investigated compounds. The manganese(II) complex catalysed the disproportionation of hydrogen peroxide in the presence of imidazole. (C) 2009 Elsevier Ltd. All rights reserved.