Salicylic acid derivatives form stable complexes with scandium(III) ion in aqueous solution

Turkel N., Ozer U.

CHEMICAL & PHARMACEUTICAL BULLETIN, vol.48, no.6, pp.870-872, 2000 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 6
  • Publication Date: 2000
  • Doi Number: 10.1248/cpb.48.870
  • Journal Name: CHEMICAL & PHARMACEUTICAL BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.870-872
  • Bursa Uludag University Affiliated: No

Abstract

The stability constants of 5-nitrosalicylic acid (5-NSA) and 5-sulfosalicylic acid (5-SSA) complexes of Sc(III) were determined by potentiomeric pH titration. ML and ML2 type first and second complexes were observed in the solutions of 5-NSA and 5-SSA with Sc(III) at 25 degrees C in I=0.1 M ionic medium. The stability constants of Sc(III)-5NSA and Sc(III)-5SSA systems were also investigated by spectrophotometry to determine the stoichiometries of the complexes formed in the reactions. Our results showed that Sc(III)-5SSA complexes are more stable than the Sc(III)-5NSA completes in aqueous solutions.