Chemistry - Sciene

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.

     This  thesis consists of the synthesis of new liquid crystalline compounds 2-thiobutanoyl-5-[4-(4´-methoxybenzylideneamino)phenyl]1,3,4-oxadiazole 1_e, 4-[4´-methoxyben- zylideneamion)benzoyloxy]propylbenzoate 2_d and two new homologous series derived from 2,5-bis-[4-amino phenyl]-1,3,4-oxadiazole 3_d, these are 2,5-bis-[4-(4´-alkoxybenzylideneamino)phenyl]-1,3,4-xadiazole 3_e1-3_i1 and 2,5-bis-[4-(4´-alkoxybenzanilide)phenyl]-1,3,4-oxadiazole 3_e2-3_i2.(3_{e2,f2,g2,h2, i2}