Yazar "Ucan, SY" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    Synthesis and characterization of new Schiff bases and their cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II) and mercury(II) complexes
    (TAYLOR & FRANCIS INC, 2005) Ucan, SY; Ucan, M; Mercimek, B
    Nickel(II), copper( II), cobalt( II), zinc( II), cadmium( II) and mercury( II) complexes chelates containing the Schiff base ligands methyliminoisonitroso-2-acetylnaphthalene (HL1) and benzyliminoisonitroso-2-acetylnaphthalene (HL2) have been prepared. The results suggest that the Schiff bases function as bidentate ligands and indicate a mononuclear structure for the Cu(II) complexes with square-planar geometry. The Ni(II), Zn(II), Hg(II) and Cd(II) complexes are of tetrahedral geometry and the Co(II) complexes with octahedral geometry with water molecules at the axial positions. These compounds have been characterized by elemental analyses, magnetic susceptibility, mass, IR, UV, H-1 and C-13 NMR spectroscopy.
  • Küçük Resim Yok
    Öğe
    Synthesis and characterization of tetradentate N2O2 Schiff base ligands and their transition metal complexes
    (TAYLOR & FRANCIS INC, 2005) Ucan, SY; Mercimek, B
    Two new ligands, 1,2-propylimino-bis(isonitroso-2-acetylnaphthalene) (H2L1) and 1,2-ethyl-imino-bis(isonitroso-2-acetylnaphthalene) (H2L2), have been synthesized by the reaction of isonitroso-2-acetylnaphthalene with 1,2-diaminopropane or 1,2-diamino-ethane. These ligands were reacted with nickel(II), copper( II), cobalt( II), zinc( II), cadmium( II) and mercury( II) ions to form complexes containing tetradentate Schiff bases. Each metal ion is in a four-coordinate environment of two imine nitrogen atoms and two oxime oxygen atoms. The new compounds have been characterized by elemental analyses, magnetic susceptibility, mass, IR, H-1 and C-13 NMR spectroscopy.