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Complex Formation of Thiazolidine-2,4-dicarboxylic Acid with Selected Divalent and Trivalent Metal Ions

P. Butvin, M. Mitková, J. Světlík, and E. Havránek

Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University, SK-832 32 Bratislava

 

E-mail: butvin@fpharm.uniba.sk

Received: 18 July 2001

Abstract: Verification of the stability of (2RS,4R)-thiazolidine-2,4-dicarboxylic acid (TIDA) and mainly the study of its interaction with Mg(II), Ca(II), Ba(II), Cd(II), Cu(II), Ni(II), Pb(II), Zn(II), Al(III), Ga(III), In(III), and La(III) at ionic strength I(NaCl) = 0.1 mol dm−3 and temperature θ = 25ºC using the potentiometric titration method gave the following results: Its aqueous solutions are stable for several weeks at ordinary conditions, at temperatures up to 70ºC at least for 5 h. Secondly, TIDA acts as a tridentate ligand towards the selected metal ions binding them by two chelate rings giving the complexes of n(L):n(M) = 1:1 type only. These are of rather low stability and selectivity.

Full paper in Portable Document Format: 563a174.pdf

 

Chemical Papers 56 (3) 174–177 (2002)

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