title: Stereochemistry of new nitrogen containing heterocyclic aldehyde. VI. Novel structural and properties models of uranyl with quinoline azodyes.
abstract: A novel series of UO2(2+) complexes with 5-(4'-derivatives phenyldiazo)-8-hydroxy-7-quinolinecarboxaldehyde (L1H-L7H), have been prepared. The composition and structure were confirmed by elemental analyses, 'HNMR spectra and IR spectroscopy measurements. Data from the above show that they exist in two isomeric solid forms. The polymeric structure results from intermolecular U=O...U=O interactions. The ligands act as a monobasic bidentate chelating agent coordinating through C=O and OH groups by replacement of a proton from the latter group. The force constant F(U-O) (mdyn A(-1)) and the bond length R(U-O) (A) of the U-O bond were calculated from the IR data and related to the electronic properties of the substituents. The existing literature on the coordination chemistry of these ligands are obscure.
authors.affiliation: Chemistry Department, Faculty of Science (Demiatta), Mansiura University, Egypt.
authors.forename: A F
authors.initials: AF
authors.lastname: Shoair
authors.forename: A A
authors.initials: AA
authors.lastname: El-Bindary
authors.forename: A Z
authors.initials: AZ
authors.lastname: El-Sonbati
authors.forename: R M
authors.initials: RM
authors.lastname: Younes
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D001391:Azo Compounds / Q000737:chemistry*; D006574:Heterocyclic Compounds, 2-Ring / Q000737:chemistry*; D007477:Ions; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry*; D011804:Quinolines / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods; D017974:Uranium Compounds / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D001391:Azo Compounds; D006574:Heterocyclic Compounds, 2-Ring; D007477:Ions; D011804:Quinolines; D017974:Uranium Compounds; C037219:quinoline; D009584:Nitrogen