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UO2(VI), Sn(IV), Th(IV) and Li(I) complexes of 4-azomalononitrile antipyrine

Synthesis, characterization and thermal studies
  • H. A. El-Boraey
  • F. A. El-Saied
  • S. A. Aly
Article

Abstract

UO2(VI), Sn(IV), Th(IV) and Li(I) complexes of 4-azomalononitrile antipyrine (L) have been isolated and characterized based on IR spectra, 1H NMR, elemental analyses, molar conductance and thermal analysis (DTA/TG). The study revealed that the ligand behaves as a neutral bidentate one and coordination takes place via the carbonyl atom of pyrazolone ring >C=O and the azomethine nitrogen >C=N. The thermal stability of the metal complexes were investigated by thermogravimetry (TG), differential thermal analysis (DTA) techniques and infrared spectra, and correlated to their structure. The thermal study revealed that Th(IV) complexes show lower thermal stability than both UO2(VI) and Sn(IV) complexes.

Keywords

complexes conductivity IR synthesis thermal analysis (DTA/TG) 

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Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceEl-Menoufia UniversityShebin El-KomEgypt
  2. 2.Department of Chemistry, Genetic Engineering and Biotechnology Research InstituteEl-Menoufia UniversitySadat CityEgypt

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