Synthesis, Structure, Physicochemical Properties and Catecholase-like Activity of a New Dicopper(II) Complex

the synthesis, characterization and catecholase activity studies of the complex [cu2(h2bbppnol)(m-oac)(m-clo 4)]clo4·h2o·etoac containing the dinucleating ligand n,n'-2-hydroxybenzyl-n,n' -2-pyridylmethyl-2-hydroxypropane-1,3-diamine (h3bbppnol) are presented here. the complex was characterized by ir, electronic and epr spectroscopies, cyclic voltammetry, magnetic susceptibility measurements and x-ray crystallography. the catecholase-like activity of the complex was determined spectrophotometrically by monitoring the oxidation of 3,5-di-tert-butylcatechol to the corresponding o-benzoquinone in o2-saturated methanol/aqueous buffer (ph 8) mixtures at 25oc. the complex was able to oxidize the model substrate with a turnover number of 0.0057 s-1.