Synthesis and Characterization of Novel Tetradentate MacrocycleLigand Type N4 (1,5,8,12 - tetraazacyclotetradecan – 6,7,13,14 -tetraone)and its Complexes with Co(II), Ni(II), Cu(II) and Zn(II)

Areej.A.Jaralla,

	Synthesis and Characterization of Novel Tetradentate MacrocycleLigand Type N4 (1,5,8,12 - tetraazacyclotetradecan – 6,7,13,14 -tetraone)and its Complexes with Co(II), Ni(II), Cu(II) and Zn(II)
Journal of Research Diyala humanity
Article 1, Volume 0, Issue 39, 2017, Pages 26-37
Author

Abstract
The ligand (1,5,8,12–tetraazacyclotetradecan-6,7,13,14-tetraone) (H4L) prepared from reaction diethyl oxalate with 1,3-diaminopropane .This ligand was reacted with some metal ions (Co(II), Ni(II), Cu(II) & Zn(II)) in N,N-dimethylformamide (DMF) to give a series of new complexes in the general formula [M(Hn L)]x , where: ( M = Co(II) , Ni(II), n = 0 , x = -2) ; (M = Cu(II) , Zn(II), n = 1 , x = -1) . All compound have been characterized by spectroscopic methods [I.R,UV-Vis , Atomic absorption] , Elemental analysis and molar conductivity measurements. From the above data the proposed molecular structure for [Co(L)]-2 and [Ni (L)]-2 is square planar structure , while the rest complexes [Cu (HL)]- and [Zn (HL)]- give a tetrahedral structure.
Keywords
ligand; some metal ions

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