title: Spectroscopic studies on some azo compounds and their cobalt, copper and nickel complexes.
abstract: Synthesis and characterization of [o-carboxy phenylazo] moiety of barbituric acid, thiobarbituric acid, thiouracil, citrazinic acid, and disodium chromotropate and their complexes derived from cobalt (II), nickel (II), and copper (II) salts were done. The stereochemistry and the mode of bonding of the complexes were achieved based on elemental analysis, NMR, UV-Vis, IR and ESR. The dissociation constants of the free azo ligands are evaluated by spectrophotometric methods.
authors.affiliation: Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt. drmsmasoud@yahoo.com
authors.forename: Mamdouh S
authors.initials: MS
authors.lastname: Masoud
authors.forename: Ekram A
authors.initials: EA
authors.lastname: Khalil
authors.forename: Ahmed M
authors.initials: AM
authors.lastname: Hindawy
authors.forename: Alaa E
authors.initials: AE
authors.lastname: Ali
authors.forename: Eman F
authors.initials: EF
authors.lastname: Mohamed
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared
chemical_list: D001391:Azo Compounds; D003035:Cobalt; D003300:Copper; D009532:Nickel