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Structural characterization and EPR spectral studies on mononuclear copper(II) complex of saccharin with ethylnicotinate

Date

2009

Author

Ucar, Ibrahim
Bozkurt, Esat
Kazak, Canan
Bulut, Ahmet

Metadata

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Abstract

Mononuclear copper(II) saccharinate (sac) complex containing ethylnicotinate (enc). [Cu(enc)(2)(sac)(2) (H(2)O)]center dot 1.4H(2)O has been synthesized and characterized by spectroscopic (IR, UV-vis, EPR), X-ray diffraction technique and electrochemical methods. it crystallizes in the tetragonal crystal systems with space group 14(1)cd and Z= 8. The copper(II) ion presents a CuN(4)O distorted square pyramidal coordination. Based on EPR and optical absorption studies, spin-Hamiltonian and bonding parameters have been calculated. The g-values, calculated for title complex in polycrystalline state at 298 K and in frozen DMF (110 K). indicate the presence of the unpaired electron in the d(x2-y2) orbital. The evaluated metal-ligand bonding parameters showed strong in-plane sigma and in-plane pi-bonding. Some comparisons with related structures are made and the most important features of its IR spectrum were also discussed. The cyclic voltammogram of the title complex investigated in DMF (dimethylformamide) solution exhibits only metal centred electroactivity in the potential range +/- 1.25 V vs. Ag/AgCl reference electrode. (C) 2008 Elsevier B.V. All rights reserved.

Source

Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy

Volume

72

Issue

1

URI

https://doi.org/10.1016/j.saa.2008.06.046
https://hdl.handle.net/20.500.12712/18804

Collections

  • PubMed İndeksli Yayınlar Koleksiyonu [6144]
  • Scopus İndeksli Yayınlar Koleksiyonu [14046]
  • WoS İndeksli Yayınlar Koleksiyonu [12971]



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