Synthesis and structure of tetranuclear zinc(II) and binuclear copper(II) complexes of a dithiolate compartmental macrocyclic ligand: a model for the binuclear CuA site in cytochrome c oxidase and N2O reductase

Abstract

The tetranuclear cluster [Zn₂L(µ-OH)]₂[ClO₄]₂·2H₂O (L = dianion of the condensation product of 1,3-diaminopropane and 2,6-diformyl-4-methylthiophenol) shows two unique dinuclear Zn^II units linked by two µ-hydroxy bridges; the structure of the Cu^II complex [Cu₂L(HOMe)₂](NO₃)]PF₆ shows square-pyramidal coordination at the Cu centres with two thiolate bridges and two terminal N-donors, with a Cu⋯Cu separation of 3.264(2)Å.