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The Synthesis and Spectral Characterization of Complexes of Co(II), Ni(II), Cu(II) and Zn(II) with a New 1,3-Dioxolane Derivatives of Unsymmetrical vic-Dioximes

Canpolat E., Kaya M.

Polish Journal of Chemistry

2005

Vol. 79 / nr 5

807-815

Two new vic-dioxime ligands containing 1,3-dioxolane ring and ethylenediamine, N_-hydroxy-2-(hydroxyimino)-N-(2-{[(2-phenyl-1,3-dioxolan-4-yl)methyl]amino}ethyl)ethanimidamide (L1H2), N_-hydroxy-2-(hydroxyimino)-N-(2-{[(2-methyl-2-phenyl-1,3-dioxolan- 4-yl)methyl]amino}ethyl)ethanimidamide (L2H2) and their complexes have been prepared from chloride salts of CoII, NiII, CuII and ZnII in EtOH. The authenticity of the ligands and their complexes have been established by IR, 1H- and 13C-NMR spectra, UV-Visible spectroscopy, elemental analysis and magnetic susceptibility measurements. The complexes are mononuclear. Ligands form complexes [(L1H)2M] and [(L2H)2M] with a metal:ligand ratio of 1:2 with M = CoII, NiII and CuII. ZnII forms with ligands complexes [(Zn)(L1H)(Cl)(H2O)] and [(Zn)(L2H)(Cl)(H2O)] which have a metal:ligand ratio of 1:1. The mononuclear CoII, NiII and CuII complexes indicated that the metal ions are coordinated to ligands by two N atoms, as do most of the vic-dioximes. In the Zn(II) complexes the ligands are coordinated by theNandOatoms of the vic-dioximes.

Metal complexes of pyrroline-N-oxide dioxime

Burdukov A. B., Mokina E. V., Shvedenkov Y. G., Reznikov V. A., Roschupkina G. I., Romanenko G. V.

Materials Science Poland

2005

Vol. 23, No. 3

757--763

Syntheses and structures of nickel(II) and copper(II) complexes with pyrroline N-oxide 2,3-dioxime (H2LR) are reported. The ligands shows N,O chelating mode unusual for conventional dioxime ligands. The copper compounds of Cu2(HLR)2LR composition can be oxidized into complexes containing coordinated vinylnitroxide radicals.

The Synthesis and Spectral Characterization of N,N-Bis(2-{[2-methyl-2-phenyl-1,3-dioxolan-4-yl)methyl] amino}ethyl)N',N'-dihydroxyethanediimidamide and Its Complexes

Canpolat E., Kaya M., Öztürk O.

Polish Journal of Chemistry

2004

Vol. 78 / nr 10

1843-1850

N,N-Bis(2-{[(2-methyl-2-phenyl-1,3-dioxolan-4-yl)methyl]amino}ethyl)N_,N_-dihydr oxyethanediimidamide (LH2) has been synthesized and its mononuclear complexes with Co2+, Ni2+, Cu2+, Zn2+ and Cd2+ ions have been obtained. The mononuclear complexes indicated that the metal ions are ligand coordinated through the two N atoms, as do most of the vic-dioximes. The authenticity of the ligands and their complexes have been established by IR, 1H- and 13C-NMR spectra, UV-Visible spectroscopy, elemental analyses and magnetic susceptibility measurements.