College of Science

         The current study involves the preparation of number of urea derivatives from reaction of urea or thiourea with aromatic amines as in compounds:"Phenylthiourea, N-phenylurea, N-(2-methoxyphenyl) urea, N-(4-aminophenyl) urea, N-(2-methylphenyl) urea, N-(2-methoxyphenyl) thiourea, N-[4- (amino carbonyl) amino phenyl] urea, N-[4-(amino carbonyl) amino phenyl] acetamide, N-pyrazin-2-ylurea, N-pyridin-2-ylurea, N,N^´-bis(3-bromophenyl)urea, N,N^´-bis(2-methoxyphenyl)urea ".In addition to the preparation of three compounds

The work in this thesis include the preparation and characterization of a series of Vanadium (IV) in the term of (VO⁺²) ion, Chromium(III) and Zinc complexes with five  (O,O),(N,N), (O,N) donor ligands, these ligands include:mandilic acid (L₁),0-phenylen di amine (L₂),benzilic acid (L₃),pyruvic acid (L₄) and  N-N' bis(salicylidene)ethylene di amine(L₅),  later was prepared ( L₅) from the reaction of ethylene diamine with salicylaldehyde.The characterization of all the  complexes resulti

Cation exchange chromatography with both unsuppressed conductivity detection and indirect photometric (IPD) modes were used for the separation and detection of inorganic cations. Salt of weak base diphenylamine has been used as an eluent for several cations both with unsuppressed conductivity detection and IPD.