title: Studies on the behaviour of beta-ethylthioethylenethioglycollate in aqueous Ni(II) and Cu(II) solutions.
abstract: The stability constants of the 1:1 and 1:2 complexes of nickel and copper(II) with beta-ethylthioethylenethioglycollic acid have been determined at 25 degrees at ionic strength 1.0 (NaClO(4)). The values for the nickel complexes are K(1) = 1.11 +/- 0.06 x 10(2) (spectrophotometrically) or 1.25 +/- 0.11 x 10(2) (potentiometrically) and K(2) = 3.04 +/- 0.24 x 10(2) (potentiometrically). The corresponding values for the copper complexes are K(1) = 1.27 +/- 0.02 x 10(3) or 1.28 +/- 0.03 x 10(3) and K(2) = 7.29 +/- 0.30 x 10(2).
authors.affiliation: Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brasil.
authors.forename: L R
authors.initials: LR
authors.lastname: Pitombo
authors.forename: M P
authors.initials: MP
authors.lastname: Peters
authors.forename: M
authors.initials: M
authors.lastname: do Carmo Medeiros