Glycolate Complexes of La(III), Ce(III), Pr(III),Nd(III), Sm(III), Gd(III), Dy(III), Ho(III),E(III), Tm(III), Yb(III) and Lu(III)

Abstract

Department of Chemistry, Regional Enginearing College, Rourkela-769 008 Manuscript received 21 August 1979, accepted 30 November 1979 The formation of 1 : 1 and 1 : 2 complexes of rare earth ions (M³⁺ =La³⁺, Ce³⁺, Pr²⁺, Nd³+, Sm³+, Gd³⁺+, Dy²+, Ho³+, Er³+, Tm²⁺, Yb²+ and Lu²+) with glycolic acid (HG) have been studied pH metrically. The equilibrium constants for the reactions k k₁ M³⁺+HG ⇌ MG²⁺+H⁺, MG²⁺⇌ MG⁺+H⁺ and M³⁺+2HG ⇌ MG₂⁺+2H⁺ and MG^₂+⇌ MG₂+H⁺ have been determined.