Two 2D Cu-Ln heterometallic polyoxometalate aggregates constructed from bis(undecatungstophosphate)lanthanate units and copper-complex bridges

Two 2D Cu-Ln heterometallic polyoxometalate aggregates 1 and 2 have been prepared and characterized by elemental analyses, IR spectra, X-ray diffraction, thermogravimetric analyses and magnetic susceptibility.