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.

Autor: Salih Ilhan, Hamdi Temel, Recep Ziyadanogullari, Memet Sekerci
Zdroj: Transition Metal Chemistry; Aug2007, Vol. 32 Issue 5, p584-590, 7p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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