Dioxygen-copper reactivity and functional modeling of hemocyanins. Reversible binding of O2 and carbon monoxide to dicopper(I) complexes [CuI2(L)]2+ (L = dinucleating ligand) and the structure of a bis(carbonyl) adduct, [CuI2(L)(CO)2]2+

Modeling tyrosinase activity. Effect of ligand topology on aromatic ring hydroxylation: An overview

“…The observed E 1/2 values (V vs. SCE) are 0.18 (1: R = R 0 = X = X 0 = H), 0.10 (4 with a 6-methyl substituent on the methylpyridine units on each arm), À0.22 (4), and À0.26 (17: R = Me). It is worth mentioning here that reported E 1/2 value for Karlin's system is different (0.31 V vs. Ag/AgCl [140]) from that obtained in this study. It is reasonable to assume that in solution each Cu I center will assume four-coordination comprising ligand donor sites and DMF.…”

Mono‐ versus Binuclear Copper(II) Complexes in Phosphodiester Hydrolysis

“…[17] The corresponding copper() complexes 1 and 2 were obtained in good yields by treatment with 1 equiv. of ligands L 1 OH and L 2 OH in dichloromethane with 1 and 2 equiv.…”

“…Ligand L 2 OH was prepared by the Michael addition of 1,3-diamino-2-hydroxypropane to 2-vinylpyridine. [17] Complex [Cu 2 To calculate the deprotonation constants and Cu II association constants from the titration data a multiparameter curve fitting program based on SUPERQUAD [25] and PSEQUAD [26] was used.…”

Activation of dioxygen by copper metalloproteins and insights from model complexes

“…8). Before the exact structure of oxy-Hc was known, Karlin and coworkers were able to spectroscopically model the absorption spectra observed in oxy-Hc [55, 132, 133]. Kitajima and coworkers were able to crystallographically characterize a μ-η 2 :η 2 -peroxodicopper(II) species of a tris(pyrazolyl)borate complex (Fig.…”