Physico-chemical and Thermodynamic Studies of La(III), Ce(III), Pr(lll), Nd(III), Sm(lll), Gd(III), Tb(lll), Dy(III), Ho(lll), and Yb(II)D-chelates of N-salicylidenevaline

Department of Chemistry, University of Jodhpur, Jodhpur Manuscript received 16 July 1977, revised 10 April 1978, accepted 11 August 1979 The stability constants and other thermodynamic parameters of the rare-earth chelates of N-salicylidenevaline have been determined using Calvin-Bjerrum \(p\)H-titration technique as used by Irving and Rossotti in aqueous media (µ=0.1, 0.05 and 0.01M NaClO4) at 25°, 30° and 35° and the order of stability constants is found to be La(III)< Ce(III)<Pr(III) <Nd (III) < Sm(III) <GD(III) <Tb(III)<Dy(III) <Ho(III)