N. Navon et al., PH-DEPENDENCE OF THE STABILITY-CONSTANTS OF COPPER(I) COMPLEXES WITH FUMARIC AND MALEIC-ACIDS IN AQUEOUS-SOLUTIONS, Inorganica Chimica Acta, 261(1), 1997, pp. 29-35
The stability constants of the copper(I) pi-complexes with the differe
nt acidic forms of fumaric and maleic acids (H2L, HL- and L2-) were de
rived as (0.23, 1.2 and 2.8) X 10(4) M-1 (maleic acid) and (0.73, 1.1
and 1.5) X 10(4) M-1 (fumaric acid), respectively, by either electroch
emical or pulse radiolytic techniques. The influence of electron-donat
ing/withdrawing substituents on the pi-ligands are discussed.