Collect. Czech. Chem. Commun. 1980, 45, 2645-2655

The reactions of oligoalcohols with arsenic, arsenous, boric and germanic acids

Antonín Mikan and Miloš Bartušek

Department of Analytical Chemistry, J. E. Purkyně University, 611 37 Brno


The reactions of sorbitol, mannitol, adonitol, dulcitol, glucose and glycerol with H3AsO4, H3AsO3, H3BO3 and GeO2 acids in dilute aqueous solutions were studied by potentiometric neutralization titrations. The formation of the following chelates was demonstrated: As(V)L3-, As(III)L(OH)2-, HAs(III)L(OH)2, BL2-, GeL2(OH)- and GeL32- and the equilibrium constants for their formation were found. Conditions for formation of these chelates of organic oligohydroxy compounds are discussed.