M. Yonemura et al., A mixed-metal Cu(II)(2)Ni(II)(2) complex derived from a phenol-based heterotetranucleating macrocyclic ligand, CHEM COMMUN, (10), 2000, pp. 817-818
A new phenol-based tetranucleating macrocycle, having two N(amine)(2)O-2 an
d two N(imine)(2)O-2 metal-binding sites in the macrocyclic framework, form
s a (Cu2Ni2II)-Ni-II complex of a defective double-cubane structure.