Synthesis and Characterization of Tetraoxime Ligand, Bis-[(2E,3E,2 E)-3,3 -(1,2-Phenylene-Dinitrilo)dibutan-2- One Dioxime] and Its Dinuclear and Tetranuclear Copper(II)/Nickel(II) Complexes

Authors : Nevin KARABÖCEK, Pınar EKMEKÇİOĞLU

Pages : 99-106

View : 21 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new tetraoxime, insert ignore into journalissuearticles values(H4L);, was prepared in EtOH by reacting biphenyl-3,3´,4,4´-tetramine with butane-2,3-dione oxime. The tetraoxime ligand was characterized by elemental analyses, H-NMR and 13C-NMR, IR, and mass spectral studies. Dinuclear copperinsert ignore into journalissuearticles values(II);, nickelinsert ignore into journalissuearticles values(II); and tetranuclear copperinsert ignore into journalissuearticles values(II); complexes of tetraoxime ligand were prepared and characterized by elemental analyses, magnetic moments, IR, and mass spectral studies. In the dinuclear metal complexes, metal:ligand ratio was found as 2:1. Elemental analyses and stoichiometric and spectroscopic data of the metal complexes indicated that the metal ions were coordinated to the nitrogen atoms of oxime groups insert ignore into journalissuearticles values(C=N);. In addition, total energy and heat formation for ligand and dinuclear Cuinsert ignore into journalissuearticles values(II);/Niinsert ignore into journalissuearticles values(II); complexes by semiempirical PM3 calculations show that square-planar geometry is more stable than other geometries.
Keywords : Tetraoxime dinuclear, tetranuclear, copper and nickel complexes