الفهرس 
Definition of hydrazineOnly 14 pages are availabe for public view
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Abstract
This chapter includes characterization of the ligand and its complexes. The ligand (N’1Z,N’4E)-2,3-dihydroxy-N’1-(1-(6-methyl-2,4-dioxo-3,4-dihydro-2H-pyran-3-yl)ethylidene)-N’4-(1-(6-methyl-3,4-dioxo-3,4-dihydro-2H-pyran-2 yl)ethylidene)succinohydrazide was prepared as follow:
1- Reflux and stirring of Tartaric acid ester with of hydrazine hydrate (1:2) molar ratio for one hour to obtain hydrazide product.
2- reaction of hydrazide product with Dehydroacetic acid for two hours (1:2) molar ratio to obtain (N’1Z,N’4E)-2,3-dihydroxy-N’1-(1-(6-methyl-2,4-dioxo-3,4-dihydro-2H-pyran-3-yl)ethylidene)-N’4-(1-(6-methyl-3,4-dioxo-3,4-dihydro-2H-pyran-2-yl)ethylidene)succinohydrazide(H4L)
The reaction of the ligand (H4L) with Cr(III), Cu(II), Ni(II), Fe(III), Co(II), Zn(II), Pb(II), Ca(II), Mg(II), AL(III), and Ba(II) complexes have been synthesized and characterized by (1H-NMR, mass, IR, UV-VIS, ESR) spectroscopy, (magnetic moments and conductance) measurements, (elemental and thermal) analyses. The IR spectral data show that, the Schiff base behaves as a neutral tetra dentate ligand bonded to the metal ions through the azomethine nitrogen atom and oxygen atoms which protonated or deprotonated form adopting distorted octahedral geometries. Molar conductance in DMF solution indicates that, the complexes are non-electrolytes. The ESR spectra of solid of copper(II) complexes (2,7and 22) are characteristic of species d9 configuration having axial type of a d(x2-y2) ground state which is the most common for copper(II) complexes. However, Mn(II) complexes (6) and (16), Co(II) complex (10), Cr(III) complex (11) and Fe(III) complex (13) show isotropic type indicating an octahedral geometry.