No abstract

Facile O2 release from an oxyhemocyanin model has been achieved for the first time, with the new room‐temperature‐stable μ‐η2:η2‐peroxodicopper complex [Cu2O2(L2)]2+ (1). X‐ray structural and spectroscopic studies on 1 show that elongation of the CuO bonds, induced by the bridgehead methyl groups of L2, is responsible for the ease of O2 release. CO/O2 binding by 1, monitored by UV/Vis spectroscopy (see picture), is completely reversible.

Di-μ-hydroxodicopper(II) complex with a hexapyridine dinucleating ligand, [Cu2(OH)2(hexpy)](CF3SO3)2 (hexpy=1,2-bis[2-(bis(2-pyridyl)methyl)-6-pyridyl]ethane), reacts with H2O2 in MeCN/CH2Cl2 to give a superoxodicopper(II) complex.