A heterotrimetallic Cu-Co-Zn complex with the 2,2'-iminodiethanol ligand

The crystal structure of the title compound, triacetato-1 kappa O;3 kappa O-4,O'-(2,2'-iminodiethanol)-1 kappa O-3,N,O'bis(mu-2,2'-iminodiethanolato)1 kappa O-2: 2 kappa O-6,N,O':3 kappa O-2'-cobalt(III)copper(II)-zinc(II), [CoCuZn(C4H9NO2)(2)(C2H3O2)(3)(C4H11NO2)], shows a molecule with a triangular three-metal core. The metal sites were refined with full occupancies, but the possibility that the Zn and Cu positions are actually mixed Cu/Zn sites cannot be excluded. The intermetallic Cu center dot center dot center dot Co and Co center dot center dot center dot Zn distances are 2.924 (3) and 2.906 (3) angstrom, respectively. The neutral molecules are held together by N-H center dot center dot center dot O hydrogen bonds involving amine groups from the 2,2'-iminodiethanol ligands and acetate groups to build two-dimensional layers.