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Abstract The master thesis include four main chapter I- Introduction This chapter includes an overview of previous researches for complexes of hydrazone ligands and their applications II- Aim of the work The work aimed to prepare and characterize new Schiff base ligand and its metal complexes aiming to study their effects in the treatment of tumor . III- Experimental This chapter contains the chemical and instruments used in Practical part of thesis as follow: 1) Preparation of the Schiff base ligand and its metal complexes. 2) characterization of the ligand and its complexes using: Physical techniques such as molar conductance and magnetic susceptibility Elemental analyses (C, H, N, Cl and M). Spectral techniques as IR, UV- Vis., 1HNMR, mass spectra and ESR measurements. Thermal techniques as DTA. and TGA 3) Measurement of biological activity English summary 177 iv. Results and discussion This chapter includes Spectroscopic (IR,1H-NMR, UV-VIS, Mass and ESR spectra) and elemental studies of the (N’1,N’4)-2,3-dihydroxy- N’1,N’4-bis((2-hydroxynaphthalen-1-yl)methylene)succinohydrazide (H6L) and its metal complexes were reported. The magnetic properties and thermal analyses (DTA and TGA) were also carried out. The IR spectra of the prepared complexes suggested that, the ligand adopted either a bidentate or a tetradentate fashion, bonding to the metal ion through the azomethine nitrogens and the two phenolic oxygen atoms (ONNO). Electronic spectra and magnetic su Zinc(II) complexes (14) and (15), cadmium(II) complexes (16-18) and lead(II) complex (19) show diamagnetic property. sceptibility measurements revealed its geometry for all complexes The analytical and physicochemical data confirmed the composition and structure of the newly obtained compounds. The ESR spectra of solid Cu(II) complexes (2-5) show axial type indicating a d(X2-y2) or d(Z2) ground state with significant covalent bond character. The ligand behaved as monobasic or neutral bidentate. The complexes adopted distorted octahedral geometry around the metal ion. The ligand recorded weak cytotoxic activity in the time that some complexes were very prospective compared to ALMURAN (zathiopeine) standard drug. This indicates enhancing of antitumor activity upon the coordination process. Cu(II) complex (12) showed the highest cytotoxic activity against MCF-7 with IC50 5.12μg/ml. This finding indicated to a very promising candidate as anti-breast carcinoma meanwhile, Cd(II) complex (18) recorded the highest activity against Hep-G2 (human liver cancer) with IC50 3.7 μg/ml. |