Solution studies of copper(II) complexes as a contribution to the study of the active site of galactose oxidase

Abstract

The synthesis and solution characterization of the coordination compounds - [CuII(H2bbpeten)](NO3)2, [H 2bbpeten = N-(2-hydroxybenzyl)-N,N′-bis(2-pyridylmethyl)- N′-(2-hydroxyethyl)ethane-1,2-diamine]; [CuII(H 3bpeten)](NO3)2, [H3bpten = N,N′-bis- (2-hydroxybenzyl) -N-(2-pyridylmethyl)-N′-(2-hydroxyethyl) ethane-1,2-diamine]; [CuII(Hnbbpeten)]NO3, [H 2nbbpeten = N-(5-nitro-2-hydroxybenzyl)-N,N′-bis(2- pyridylmethyl)-N′-(2-hydroxyethyl)ethane-1,2-diamine] and [Cu II(Hbnbpeten)], [H3bnbpeten = N,N′-bis-(5-nitro-2- hydroxybenzyl)-N-2-pyridylmethyl)-N′-(2-hydroxyethyl)ethane-1,2-diamine] - are reported as copper(II) complexes containing alcoholic, pyridine and phenolic arms. Two of the ligands bear a NO2 group at the para position of one or two of the phenolic moieties. Electrochemical studies have been performed for the proligands and for the copper complexes.