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    STUDIA PHYSICA - Issue no. SPECIAL ISSUE / 2001  
         
  Article:   SPECTROSCOPICAL INVESTIGATION OF SOME CALIX[N]ARENES DERIVATIVES UTILISABLE AS METAL EXTRACTING AGENTS.

Authors:  CRISTINA CIOCAN, ELISABETH-JEANNE POPOVICI, CRINA DAN, MARIA VĂDAN, R. GRECU, N. POPOVICI.
 
       
         
  Abstract:  p-tert-butil-calix[n]arene [n=4,6] and their corresponding acetate-derivatives were prepared by specific procedures. The calix[n]arenes'' purity was checked by elemental analysis and various spectroscopic methods such as RMN, MS-GC, UV-Vis and FTIR. The ability of calixarenes acetates to extract precious metallic ions from aqueous solutions was tested. The high effectiveness of O-acetilated p-t-butil calix[6] arene to extract Pt(II) ions was demonstrated in relation with Pd2+ and Rh3+ species.  
         
     
         
         
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