title: Polarographic analysis of the mixed-ligand system Cu(II)-glycine-glycinate.
abstract: The polarographic method has been applied to the study of the mixed-ligand system Cu(II)-glycine-glycinate, in aqueous medium, at I = 1.0M (NaClO(4)) and 25 -/+ 0.1 degrees . The stabilization of the mixed complex [CuG(G(-))](+) has been made clear and its stability constant (beta(11) = 1 x 10(9)) has been determined. The stability constants of the complexes [CuG]I(2+) (beta(10) = 17), [CuG(2)](2+) (beta(20) = 230), [Cu(G(-))](+) (beta(01) = 2.1 x 10(8)) and [Cu(G(-))(2)] (beta(02) = 1.7 x 10(15)) have also been calculated.
authors.affiliation: Departments of Physical Chemistry and Analytical Chemistry, University of La Laguna, Tenerife, Canary Islands, Spain.
authors.forename: J C
authors.initials: JC
authors.lastname: Placeres
authors.forename: T B
authors.initials: TB
authors.lastname: Miquel
authors.forename: G R
authors.initials: GR
authors.lastname: Cabrera
authors.forename: M T
authors.initials: MT
authors.lastname: Alaejos