Ligands containing elements of Group 6B. Part VII. Comparison of the donor properties of some dicarboxylic acids of sulphur, selenium, and tellurium towards silver(I) and some bivalent metal lons

Abstract

The ligands X(CH₂CH₂CO₂H)₂(X = O, S, Se, and Te), Se(CH₂CO₂H)₂, X[CH(Me)CO₂H]₂(X = S or Se), and HO₂CCH₂SCH₂CH₂CO₂H have been synthesised and the formation constants of their complexes with H⁺, Ag⁺, and a number of bivalent metal ions measured potentiometrically at 25 °C and I= 0.10M(K[NO₃]). With Ag⁺ the stability order is Te > Se > S O.