Model complexes for ligand probes of met-hemocyanin and met-tyrosinase derivatives. Structure of a novel 1,1-azido bridged binuclear copper(II) complex

Addition of HX (X = N3–, Cl–) to a hydroxy-bridged binuclear copper(II) complex gives X-bridged complexes with an environment analogous to protein binuclear sites; the structure of the azide derivative shows a novel µ-1,1-bridging mode, suggesting this as a possibility in the biological systems.