Stabilities of complexes of scandium(III) and yttrium(III) with catechol derivatives


Turkel N., Aydin R. , Ozer U.

TURKISH JOURNAL OF CHEMISTRY, vol.23, no.2, pp.139-152, 1999 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 2
  • Publication Date: 1999
  • Title of Journal : TURKISH JOURNAL OF CHEMISTRY
  • Page Numbers: pp.139-152

Abstract

The interactions of scandium(III) and yttrium(III) ions with catechol derivatives; catechol(H2L, CAT), 4-nitrocatechol(H2L; 4NCAT) and 2,3-dihydroxynaphthalene- 6-sulphonic acid(H2L, DHN) were investigated in different metal ion:ligand mole ratios, by potentiometry and spectrophotometry. The stoichiometries of formed complexes have been defined by Job's method and formation curves have been drawn for some complexes, whenever possible: The stability contants of the fourteen formed complexes in definite stoichiometries have been determined, in an ionic medium of 0.1M KNO3 or NaClO4 at a temperature of 25 degrees C.