Synthesis and structural studies of 2-(hydroxyimino)-1-methylpropylideneamino-phenyliminobutan-2-one oxime, ligand and its complexes with Cu-(II) and Ni-(II)


Karabocek S. , Karabocek N. , Armutcu A.

TRANSITION METAL CHEMISTRY, cilt.31, ss.459-464, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 31 Konu: 4
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1007/s11243-006-0012-6
  • Dergi Adı: TRANSITION METAL CHEMISTRY
  • Sayfa Sayıları: ss.459-464

Özet

A new ligand incorporating a dioxime moiety, (2E,3E)-3-[(2-{[(1E,2E)-2-(hydroxyimino)-1-methylpropylidene]amino}phenyl)imino]butan-2-one oxime, (H(2)Phmdo) (3) has been prepared by reacting 2,3-butanedionemono-{O-[4-(1-methyl-2-oxo-propylideneaminooxy)-2,3-bis-(1-methyl-2-oxo-propylideneaminooxy-methyl)-but-2-enyl]-oxime} (2) with 1,2-phenylenediamine. Mono-, di- and trinuclear copper(II) and/or nickel(II) complexes of H(2)Phmdo were characterized by elemental analyses, magnetic moments, H-1-n.m.r. and C-13-n.m.r., i.r. and mass spectral studies. The mononuclear copper(II) and nickel(II) complexes of H(2)Phmdo were found to have a 1:1 metal:ligand ratio. Elemental analyses, stoichiometric and spectroscopic data of the metal complexes indicated that the metal ions are coordinated to the oxime and imine nitrogen atoms (C=N). In the dinuclear complexes, in which the first Cu-(II) or Ni-(II) ion was complexed with nitrogen atoms of the oxime and imine groups, the second Cu-(II) ion is ligated with dianionic oxygen atoms of the oxime groups and are linked to the 1,10-phenanthroline nitrogen atoms. The data support the proposed structure of H(2)Phmdo and its complexes.