A new series of mixed ligand complexes synthesized and characterized using of azo ligand derived from (5-methyl— imidazole) with (8-hydroxy quinolone). New mix-ligand structures and their transitional metal complexes were fully characterized using several techniques, including molar conductance, elemental analysis (C.H.N), electronic spectral, magnetic measurements, 1HNMR, spectral studies, and mass spectra. The data shows that these complexes have a composition of [ML(8-HQ) Cl2] H2O where M = Co(II), Zn(II), Cu(II), X=0, and Ni(II), X=1, [ML(8-HQ)] Cl. where M=Pd. The electronic spectral data and magnetic susceptibility calculations of the complexes indicate that the octahedral geometry of all complexes, except for the Pd(II) complex, indicates a planar-square geometry. The results demonstrate that the nitrogen of the imidazole ring and azo nitrogen atom of the primary ligand are coordination sites with a nitrogen atom and oxygen atom of a secondary ligand of the (8-HQ) in the basic medium. Biological effects of the palladium (II) complex are screening against human breast cancer (MCF-7 and AMJ-13) and normal cells (HBL) were examined, which indicated colon cancer cell line LS-174. The results show the highest activity effect for the complex.

Preparation of Schiff bases compounds (A, B, and C) in absolute ethanol using concentrated phenyl hydrazine and various aromatic aldehydes such as (4-chlrobenzaldehyde aldehyde, 4-bromobenzaldehyde, N, N-dimethyl amino benzaldehyde). Melting point, FT, has been used to classify these compounds (A, B, and C). The reactions phases and series were studied using IR spectroscopy and thin layer chromatography (TLC) (ethyl acetate: toluene, 1:4). Three derivate compounds were used as antibacterial activity in this study. The results proved that all derivative compounds provided good inhibition zone against Staphylococcus aureus and pseudomonas aeruginosa especially in concentration 300mg/ml of derivative compound C with diameter inhibition zone 21.433±0.676 and 625.33±0.796 respectively.

A new azo compounds is prepared by coupling the diazonium salts of (2- Cyano aniline) with 1,3- dihydroxynaphthalene to form (E)-2-((2,4-dihydroxynaphthalen-1- yl) diazenyl)benzonitrile. The azo ligand was identified by: Mass, 1H-NMR, C13NMR,UV-Vis. and IR spectra, in addition to elemental analysis measurement. The chelate complexes were characterized by elemental analysis, magnetic susceptibility, Molar conductance, UV-Vis. and IR spectra. The geometry of metal complexes were proposed based on analytical and spectral data. Analytical data revealed that all the complexes exhibited 1:2 metal–ligand ratio. On the basis of magnetic susceptibility measurements, suitable geometry was proposed for each complex. IR spectra of complexes show that the ligand is coordinated to the metal ions in bidentate manner with Oxygen and Nitrogen donor sites of hydroxynaphthalene (OH) and azo Nitrogen, which suggest octahedral geometry for all complexes. Also, biological evaluation of all synthesized compound shows moderate to good activity against Candida albicans, as antifungal.

A photocatalyst aluminum oxide Al2O3 Nanoparticles was effectively prepared by electrochemical method using electrolysis cell which contains stainless steel (1cm 2) and aluminium plate (1cm2) were worked as a cathode and anode electrodes respectively. The synthesized Al2O3 Nanoparticles sample was identified by Fourier transform infrared (FTIR), X-ray diffraction (XRD), and Field Emission Scanning Electron Microscope (FE-SEM) with (EDS) analysis. The XRD pattern specified that prepared Al2O3 sample had a crystal structure for γ-Al2O3with average crystal size (3nm) was achieved at (1000°C) calcination temperature. FTIR spectra indicated the existence of O–Al–O bonds vibration and hydroxyl group in the sample. The FESEM images gave morpholgy of Al2O3 nanoparticles powder after calcination to 1000°C was spherical shape and the particles were attached to each other, leading to an increase in particle size.  The EDS measurements indicated the presence of Al with O peaks. The experimental results of the Al2O3 photocatalyst calcined at 1000°C for two hours showed photocatalytic efficiency to degradation Chromotrope -E122 dye under UV light.