Thermodynamic and kinetic study of copper(II) complexes with N-methylene(phenylphosphinic acid) derivatives of cyclen and cyclam

Abstract

Equilibria in the Cu2+ -H4L1 and Cu2+ -H4L2 systems, where H4L1 is 1,4,7,10-tetraaza-cyclododecane-1,4,7,10-tetrayl-tetramethylene-tetrakis(phenylphosphinic acid) and H4L2 is 1,4,8,11-tetraaza-cyclotetradecane-1,4,8,11-tetrayl-tetramethylene-tetrakis(phenylphosphinic acid), were investigated by glass electrode potentiometry at 25°C (I=0.1 mol dm-3 KNO3).

Keywords

• Thermodynamic and kinetic study
• copper(II) complexes
• N-methylene(phenylphosphinic acid)
• cyclen and cyclam derivates