Affiliations: Department of Chemistry, Pamukkale University, Denizli, Turkey | Bayburt University, Vocational School, Bayburt, Turkey | Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey
Note: [] Corresponding author: Ümmühan Ocak, Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey. Tel.: +90 462 377 25 96; Fax: +90 462 325 31 96; E-mail: [email protected]
Abstract: The synthesis and characterization of a novel metal derivative of a peripherally symmetrically tetra-substituted porphyrazine derived from 25,26-dioxa-6,7,9,10,15,16,18,19-octahydro-25H-1,24-methanodibenzo[q,t][1,4,13,16,17,10]tetraoxadithiacyclohenicosine-12,13-dicarbonitrile was carried out. The influence of metal cations such as Zn2+, Fe2+, Mn2+, Ni2+, Co2+, Hg2+ and Cu2+ on the spectroscopic properties of the ligands, the starting material dinitrile and MgPz were investigated in acetonitrile-chloroform solution (1/1) by means of absorption spectrometry. Absorption spectra showed isosbestic points in the spectrophotometric titration of Cu2+ and Hg2+ with MgPz ligand. The results of spectrophotometric titration experiments disclosed the complex stability constant of the novel ligand, MgPz with Cu2+ and Hg2+ cations.
Keywords: Crown ether, porphyrazine, absorption spectroscopy, stability constant, metal cation
