Binary and Ternary Complexes of Beryllium(II) with Malonic, Amino, Thiodicarboxylic and Some Simple and Substituted Dicarboxylic Acids in Aqueous Medium

Department of Chemistry, Marathwada University, Aurangabad-431 004 Manuscript received 9 February 1982, revised 14 December 1982, accepted 30 March 1983 The interaction of beryllium(II) with malonic, amino and thio acids in presence of some substituted and simple dicarboxylic acids has been studied. Mixed complexes of Be(II)-dicarboxylic acids with aspartic and thiomalic acids have been investigated. The distribution of the concentrations of simple and mixed species present, as a function of pH and other equilibrium constants have been utilized to explain the formation of mixed complexes. The estimation of stability constants by the relationship between complex stability and ligand basicity is discussed. The data point out that the slight differences present along the series of the complexes are not suppressed in the ternary ones