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New complexons. XXXIX. Preparation and study of the solid complexes of the racemic ethylenediamine-N,N'-disuccinic acid with iron(III), cobalt(III), and bismuth(III) ions

V. Špringer, M. Kotouček, and J. Majer

Department of Analytical Chemistry, Faculty of Pharmacy, Komenský University, 880 34 Bratislava

Abstract: In this paper, attention is paid to the synthesis of the solid complexes of the racemic ethylenediamine-iV,N'-disuccinic acid with Fe(III), Co(III), and Bi(III). The complexes Na[FeY].2H₂0, Na[CoY] . 3H₂0, and [BiHY]H₂0 were prepared. Besides thermogravimetry, the method of infrared spectrosco­ py was used for the study of these complexes. It has been revealed that the character of oxygen—metal bonds in the five-membered (covalent bond) and in the six-membered (ionic bond) chelate ring is different in all complexes. In the Bi complex, one of the carboxylic functional groups of the racemic EDDS occurs in the protonated form and does not probably take part in chelatation.

Full paper in Portable Document Format: 342a184.pdf

Chemical Papers 34 (2) 184–189 (1980)