SYNTHESIS AND CHARACTERIZATION OF Cr(III), Mn(II), Co(II), Ni(II), Cu(II) AND Zn(II) COMPLEXES WITH NEW MANNICH BASE DERIVED FROM QUINOXALINE-2-ONE

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Published: 2015-10-01

Page: 331-338


MAHMOUD NAJIM AL-JIBOURI *

Department of Chemistry, College of Science, Al-Mustansiriya University, Baghdad, Iraq

AFNAN EMAD ABDUL-AL-MUNIM

Department of Chemistry, College of Science, Al-Mustansiriya University, Baghdad, Iraq

*Author to whom correspondence should be addressed.


Abstract

New transition metal complexes of the type [M(L)2(H2O)2]Cl2, [Cr(L)2(H2O)Cl]Cl, [Ni(L)2]Cl2 and ZnLCl2 were constructed with the Mannich base, which was formed by condensation reaction of 3-ethyl-7-methyl-quinoxalin-2-one with piperidine in the presence of formaldehyde. The Mannich base and it’s complexes were characterized by elemental analysis, conductance measurements and infrared, ultraviolet visible and 1H, 13C nuclear magnetic resonance spectroscopy. Monomer structures were proposed from the spectral measurements, with a bi dentate form. The octahedral structure was proposed for all the prepared complexes whereas the zinc(II) complex assigned as tetrahedral geometry. However the diamagnetic properties and electronic spectra of nickel(II) complex revealed the square planer geometry.

Keywords: Quinoxaline, mannich bases, benzopyrazine, transition metal complexes, spectroscopic study of mannich complexes, metal chelates of quinoxaline


How to Cite

AL-JIBOURI, M. N., & ABDUL-AL-MUNIM, A. E. (2015). SYNTHESIS AND CHARACTERIZATION OF Cr(III), Mn(II), Co(II), Ni(II), Cu(II) AND Zn(II) COMPLEXES WITH NEW MANNICH BASE DERIVED FROM QUINOXALINE-2-ONE. Journal of Applied Chemical Science International, 4(4), 331–338. Retrieved from https://ikprress.org/index.php/JACSI/article/view/3468

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