Syntheses, structures and catalase-like activities of mono-, tri- and pentanuclear Cu(II), Cu(II)-Co(II) complexes with cyanide and ONO tridentate oxime ligand
Affiliations: Department of Chemistry, Sciences and Arts Faculty, Nevsehir University, Nevsehir, Turkey | Department of Chemistry, Sciences and Arts Faculty, Süleyman Demirel University, Isparta, Turkey | Department of App. Sci. and Hum., FET, MITS, Lakshmangargh, Dist Sikar, Rajasthan, India
Note: [] Corresponding author: Fatma Karipcin, Department of Chemistry, Sciences and Arts Faculty, Nevsehir University, Nevsehir 50300, Turkey. Tel.: +90 384 2153900; Fax: +90 384 2153948; E-mails: [email protected]; [email protected]
Abstract: A novel cyanide containing mononuclear copper(II) oxime complex K[CuL(CN)] (1) was synthesized as a starting material to make new polynuclear complexes. Trinuclear complexes K2[{CuL(NC)}2(ML)] (M = Co(II) (2), Cu(II) (3) and pentanuclear complexes K2[{CuL(NC)}4M] (M = Co(II) (4), Cu(II) (5)) of 4-(2-amino-4-methylphenolisonitrosoacetyl)biphenyl (H2L) have been synthesized and characterized by elemental analysis, molar conductance, FT-IR, magnetic data. The lowest energy model structures of the ligand and its mononuclear Cu(II) complex have been determined by MOPAC 2007 program using PM6 method. Catalytic activities of the complexes for the disproportionation of hydrogen peroxide were investigated in the presence of imidazole. The multinuclear Cu(II)-Co(II) complexes (2, 4) display efficiency in disproportion reactions of hydrogen peroxide producing water and dioxygen in catalase-like activity.
