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Transition Metal Chemistry

, Volume 30, Issue 5, pp 552–559 | Cite as

Copper(II), nickel(II), cobalt(II) and zinc(II) complexes of 2-[2-(6-methylbenzothiazolyl)azo]-5-dimethylaminobenzoic acid: synthesis, spectral, thermal and molecular modelling studies

  • Bhagwan S. Garg
  • Rakesh K. Sharma
  • Ekta Kundra
Article

Abstract

Complexes of copper(II), nickel(II), cobalt(II), and zinc(II) with 2-[2-(6-methylbenzothiazolyl)azo]-5-dimethylaminobenzoic acid have been prepared and characterized by elemental analysis, vibrational spectra, magnetic susceptibility measurements, conductance measurements and e.p.r. spectra. Stability constants have been evaluated potentiometrically. Electronic spectra, magnetic susceptibility measurements and molecular modeling studies support a distorted square planar geometry around the metal ions. Vibrational spectra indicate the coordination of the azo group, nitrogen of benzothiazole, the carboxylate anion and the acetate ion on complexation with the metal ion. All complexes are found to be monomers. The stability of the complexes follow the order: copper(II) > nickel(II) > cobalt(II) > zinc(II).

Keywords

Copper Zinc Nickel Cobalt Magnetic Susceptibility 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2005

Authors and Affiliations

  • Bhagwan S. Garg
    • 1
  • Rakesh K. Sharma
    • 1
  • Ekta Kundra
    • 1
  1. 1.Department of ChemistryUniversity of DelhiDelhiIndia

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