Original scientific paper

Spectrophotometric and Potentiometric Determination of Stability Constants of 2,3-Dihydroxypropionato Complexes of Cobalt(II), Nickel(II) and Copper(II)

I. Piljac ; Laboratory of Inorganic Chemistry, Faculty of Technology and Institute of Inorganic and Analytical Chemistry, University of Zagreb, 41001 Zagreb, POB 179, Croatia, Yugoslavia
B. Grabarić ; Laboratory of Inorganic Chemistry, Faculty of Technology and Institute of Inorganic and Analytical Chemistry, University of Zagreb, 41001 Zagreb, POB 179, Croatia, Yugoslavia
M. Tkalčec ; Laboratory of Inorganic Chemistry, Faculty of Technology and Institute of Inorganic and Analytical Chemistry, University of Zagreb, 41001 Zagreb, POB 179, Croatia, Yugoslavia
Š. Školjoli ; Laboratory of Inorganic Chemistry, Faculty of Technology and Institute of Inorganic and Analytical Chemistry, University of Zagreb, 41001 Zagreb, POB 179, Croatia, Yugoslavia
I. Filipović ; Laboratory of Inorganic Chemistry, Faculty of Technology and Institute of Inorganic and Analytical Chemistry, University of Zagreb, 41001 Zagreb, POB 179, Croatia, Yugoslavia

Abstract

Stability constants of 2,3-dihydroxypropionato complexes of
cobalt(II), nickel(II) and copper(II) were obtained from spectrophotometric
and potentiometric data. Spectrophotometric measurements
were made in the visible region using Bjerrum's method
of corresponding solutions. The change of concentration of hydrogen
ions in carboxylate buffers has been measured by potentiometric
titration. The stability constants and their 95 per cent confidence
intervals were calculated by a digital computer. On the
basis of the obtaiined results the stability of the investigated complexes
is discussed with respect to the ligand b asicity and the
presence of the hydroxyl groups within the ligand molecule.

Keywords

Hrčak ID:

196661

URI

https://hrcak.srce.hr/196661

Publication date:

15.10.1975.

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