
%0 Journal Article
%A Green, RW 
%A Rogerson, MJ 
%T Complex formation equilibria between copper(II) and Pyridine-2-carbaldehyde
%J Australian Journal of Chemistry
%D 1971/01/01
%V 24
%N 1
%P 65-71
%K 
%R https://doi.org/10.1071/CH9710065
%U https://www.publish.csiro.au/paper/CH9710065 
%X Copper(II) complexes of pyridine-2-carbaldehyde can be derived either from the neutral molecule (A) or from the anionic form (AOH-) of the hydrate, so that there are two sets of complexes, CuAn2+ and Cu(AOH)n2-n (n = 1, 2), related to each other as acid to conjugate base. There is also a mixed complex, CuA(AOH)+. In solution, several species are always present together in equilibrium, with the de- protonated species beginning to predominate above pH 5. The complete system of equilibria at 25° has been worked out and the constants have been evaluated by a combination of spectrophotometry and pH titrations. 
