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Coumarin-derivatized fluorescent vic-dioxime-type ligand and its complexes; the preparation, spectroscopy, and electrochemistry

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Abstract

A new vic-dioxime bearing coumarin functionality, N′1,N′2-Dihydroxy-N 1,N 2-bis(4-methyl-2-oxo-2H-chromen-7-yl)oxalimidamid (LH2), N,N-bis-[4-methylcoumarinyl]-diamino glyoxime (LH2), and its mono- and dinuclear complexes {copperII, cobaltII, nickelII and uranylII} have been reported. The fluorescence excitation and emission spectra of LH2 and its complexes with metal ions were examined. It was observed that fluorescence and excitation emission intensity of LH2 was quenched depending on complex formation with metal ions. The characterizations of all newly synthesized compounds were made by elemental analysis, 1H-n.m.r, i.r., u.v.–vis., and l.c-m.s./m.s. data. Electrochemical behaviour of the ligand involving oxime and coumarine moieties, and its complexes with NiII, CuII, CoII and UO II2 were investigated by cyclic voltammetry. The comparison of the electrochemical behaviour of the ligand with its complexes enabled us to identify metal-, oxime- and coumarine-based signals.

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Authors and Affiliations

  1. Department of Chemistry, Marmara University, 34722, Kadıköy, Istanbul, Turkey

    Meryem Çamur, Mustafa Bulut & Ali R. Özkaya

  2. Department of Chemistry, Sakarya University, 54140, Esentepe, Sakarya, Turkey

    Mehmet Kandaz

  3. Department of Chemistry, Technical University of Karadeniz, 61080, Trabzon, Turkey

    Nurettin Yaylı

Authors
  1. Meryem Çamur
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  2. Mustafa Bulut
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  3. Ali R. Özkaya
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  4. Mehmet Kandaz
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  5. Nurettin Yaylı
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Correspondence to Mehmet Kandaz.

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Çamur, M., Bulut, M., Özkaya, A.R. et al. Coumarin-derivatized fluorescent vic-dioxime-type ligand and its complexes; the preparation, spectroscopy, and electrochemistry. Transition Met Chem 32, 642–648 (2007). https://doi.org/10.1007/s11243-007-0220-8

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  • DOI: https://doi.org/10.1007/s11243-007-0220-8

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