J. Rojo et al., Self-assembly, crystal structure, and magnetic properties of a phenoxo-bridged tetranuclear Cu-II complex of the [2x2] grid type, EUR J INORG, (3), 1999, pp. 517-522
The ditopic ligand 3 has been synthesized. In its deprotonated form, it rea
cts with copper(II) ions to form a tetranuclear complex 1 of the [2 x 2] Cu
-4(II) grid type, the structure of which has been confirmed by X-ray crysta
llography. Magnetic studies of complex 1 indicate a very weak antiferromagn
etic coupling between the phenoxo-bridged Cu-II ions.