Journal of Thermal Analysis and Calorimetry

, Volume 86, Issue 1, pp 211–216 | Cite as

Spectrothermal studies of 1,10-phenanthroline complexes of Co(II), NI(II), Cu(II) and Cd(II) orotates

  • O. Z. Yeşilel
  • H. Ölmez


The 1,10-phenanthroline (phen) complexes of Co(II), Ni(II), Cu(II) and Cd(II) orotates were synthesized and characterized by elemental analysis, magnetic susceptibility, spectral methods (UV-vis and FTIR) and thermal analysis techniques (TG, DTG and DTA). The Co(II), Ni(II), Cu(II) and Cd(II) ions in diaquabis(1,10-phenanthroline)metal(II) diorotate octahedral complexes [M(H2O)2(phen)2](H2Or)2·nH2O (M=Co(II), n=2.25; Ni(II), n=3; Cu(II) and Cd(II), n=2) are coordinated by two aqua ligands and two moles of phen molecules as chelating ligands through their two nitrogen atoms. The monoanionic orotate behaves as a counter ion in the complexes. On the basis of the first DTGmax, the thermal stability of the hydrated complexes follows the order: Cd(II), 68°C 68°C


orotic acid complexes 1,10-phenanthroline complexes spectrothermal analysis 


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of Arts and Sciences, EskişehirOsmangazi UniversityEskişehirTurkey
  2. 2.Department of Chemistry, Faculty of Arts and SciencesOndokuz Mayıs UniversityKurupelit, SamsunTurkey

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