title: Salicylic acid derivatives form stable complexes with scandium(III) ion in aqueous solution.
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 complexes in aqueous solutions.
authors.affiliation: Department of Chemistry, Faculty of Arts and Sciences, Uludağ University, Bursa, Turkey. nturkel@uu20.bim.uludag.edu.tr
authors.forename: N
authors.initials: N
authors.lastname: Türkel
authors.forename: U
authors.initials: U
authors.lastname: Ozer
mesh_terms: D020156:Salicylic Acid / Q000737:chemistry*; D012538:Scandium / Q000737:chemistry*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet
chemical_list: D012996:Solutions; D020156:Salicylic Acid; D012538:Scandium