Synthesis and spectral characterization of macrocyclic Schiff base by reaction of 2,6-diaminopyridine and 1,4- bis (2-carboxyaldehydephenoxy)butane and its CuII, NiII, PbII, CoIII and LaIII complexes |
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| Authors: | Salih Ilhan Hamdi Temel Recep Ziyadanogullari and Memet Sekerci |
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| Institution: | (1) Department of Chemistry, Faculty of Education, Dicle University, Diyarbakir, 21280, Turkey;(2) Department of Chemistry, Faculty of Arts and Sciences, Dicle University, Diyarbakir, 21280, Turkey;(3) Department of Chemistry, Faculty of Arts and Sciences, Fırat University, Elazığ, 23169, Turkey |
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| Abstract: | A new macrocyclic ligand, 1,3,5-triaza-2,4:7,8:15,16-tribenzo-9,15-dioxacycloheptadeca-1,5-diene (L) was synthesized by reaction
of 2,6-diaminopyridine with 1,4-bis(2-carboxyaldehydephenoxy)butane. Then, its CuII, NiII, PbII, CoIII and LaIII complexes were synthesized by the template effect by reaction of 2,6-diaminopyridine and 1,4-bis (2-carboxyaldehydephenoxy)butane and Cu(NO3)2 · 3H2O, Ni(NO3)2 · 6H2O, Pb(NO3)2, Co(NO3)2 · 6H2O, La (NO3)3 · 6H2O, respectively. The ligand and its metal complexes were characterized by elemental analysis, IR, 1H- and 13C-n.m.r., UV-vis spectra, magnetic susceptibility, thermal gravimetric analysis, conductivity measurements and mass spectra.
All complexes are diamagnetic and the CuII complex is binuclear. The CoII complex was oxidised to CoIII. |
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