A new three-dimensional open-framework cobalt（Ⅱ）-tungsten（Ⅵ） phosphate,[H3NCH2CH2NH3]3·[Co3W4P4O28]（1） has been synthesized from the reaction of CoCl2·6H2O,WO3,H3PO4,ethylenediamine and H2O.The title compound was fully characterized by infrared spectroscopy,elemental analysis,magnetic properties,thermogravimetric analysis,XPS and single-crystal X-ray diffraction.The compound crystallized in a tetragonal space group I4（1）/a with a=1.7118（4） nm,c=1.0773（2） nm,V =3.1568（11） nm3,Z =4.
ZHANG Yan-linYU Hai-huiZHOU YangHOU Dian-huiKONG Li
