Copper(II) ions interactions in the systems with triamines and ATP. Potentiometric and spectroscopic studies

Copper(II) is coordinated by two phosphate groups of ATP at low and intermediated pH but by nitrogen atoms of two 3,3-tri or spermidine molecules at high pH. Nitrogen atom N7 of adenine moiety does not coordinate. It is related to the charge equilibrium and stability determined by potentiometric method.80