Manganese(II) and nickel(II) complexes of some 2-(polyhydroxyalkyl) thiazolidine-4-carboxylic acid derivatives

Tamás Gajda, Norbert Buzás, László Nagy, Kalman Burger

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The manganese(II) and nickel(II) ion coordination equilibria of some 2-(polyhydroxyalkyl) thiazolidine-4-carboxylic acid (PHTAC) derivatives were studied by potentiometric titration in the pH range 2-11. Nickel(II) parent complexes with (1, 1, 0) and (1, 2, 0) compositions and manganese(II) complexes with (1, 1, 0) composition were formed. In both systems, mixed-ligand complexes involving hydroxide ion coordination and/or further deprotonation of the alcoholic hydroxy groups of the sugar moieties were observed at pH > 6. EPR measurements indicated that in alkaline solution all the manganese(II)-PHTAC complexes are dimeric. The magnitudes of the complex-formation constants were shown to depend on the conformation of the hydroxy groups on the first carbon atoms of the polyol chains.

Original languageEnglish
Pages (from-to)2237-2243
Number of pages7
JournalPolyhedron
Volume11
Issue number17
DOIs
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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