Copper-dioxygen complexes and their roles in biomimetic oxidation reactions - Advances in Catalytic Activation of Dioxygen by Metal Complexes - page 89

resulting complex has physical and spectroscopic properties very similar to
those of 1 .

Kitajima and co-workers 62,63 used a sterically hindered tridentate
ligand in characterizing ( 2 , Chart 2) (HB(3,5-
= hydrotris(3,5-diisopropyl-pyrazolyl)borate anion), which has a side-
on ligated peroxodicopper(II) structure, with physical properties (i.e.,
Cu…Cu = 3.56 Å, O-O = 1.412 Å, (resonance Raman),
551 nm (790)) closely matching those of
Limulus polyphemus oxy-hemocyanin. This important contribution to

synthetic modeling of metalloproteins in fact preceded confirmation of the