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  Global Journal of Inorganic Chemistry. Volume 1, Issue 1 (2010) pp. 65-75
  Research Article
 
Spectroscopic characterization and molecular modeling of bioactive Schiff base complexes of Sn(II) and Pb(II)
  Bibhesh K Singha*, Hament K Rajourb, Anant Prakasha, Narendar Bhojakc  
     
aInorganic & Bioinorganic Research Lab, Department of Chemistry, Govt. Post Graduate College, Ranikhet-263645 (Uttarakhand) India
bDepartment of Chemistry, Ramjas College, University of Delhi, Delhi-110007, India
cDepartment of Chemistry, Govt. Dunger College, MGS University, Bikaner( Rajasthan) India

   
  Abstract  
 

Sn(II) and Pb(II) complexes of  two symmetrical Schiff bases have been synthesized and characterized by various physico-chemical studies. The spectroscopic data(IR,1H NMR) indicates coordination of metal ions through azomethine nitrogen and acetate/chloride ions. Mass spectrum explains the successive degradation of the molecular species in solution and justifies M:L:: 1:1 complexes. Molecular structure of the complexes has been optimized by MM2 calculations and suggests a tetrahedral geometry. Kinetic and thermodynamic parameters were computed from the thermal data using Coats and Redfern method, which confirm first order kinetics. The bio-efficacy of the ligands and their complexes has been examined against the growth of bacteria in vitro to evaluate their anti-microbial potential.

     
  Keywords  
  Schiff bases; Tin(II); Lead(II); Spectra; Thermal; Molecular Modeling  
     
   
   
   
   
     

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