A novel 2D layer structural compound constructed from tetra-capped pseudo-Keggin heteropolytungstates interacting with copper coordination fragments:[Cu(en)2(H2O)]2[Cu(en)2]2[AsW_2~(VI)W_7~VV_7~(IV)O44]·2H2O

摘要

A novel polyoxometalate[Cu(en)2(H2O)]2[Cu(en)2]2[AsW9V7O44]·2H2O(1)has been hydrothermally synthesized and characterized by elemental analysis,IR spectrum,XPS spectrum and single crystal X-ray diffraction analysis.It is the first example of two-dimensional layer structure constructed from four vanadium-capped pseudo-Keggin tungstates.The study of the magnetic susceptibility of 1 demonstrates the presence of ferromagnetic interactions.