摘要

A new organic-inorganic hybrid compound constructed from Keggin-type polyanion clusters and transition metal complexes, [Co(2,2 '-bipy)(3)](1.5)[(SiWWVI)-W-V 11O40Co(2,2 '-bipy)(2) (H2O)]center dot 0.5H(2)O (1), has been hydrothermally prepared and characterized by elemental analysis, IR, UV-Vis, TG-DTA and single crystal X-ray diffraction. Compound 1 crystallized in the monoclinic system, space group C2/c, a=46.995(15), b=14.487(5), c=26.205(9)angstrom, beta=90.000(0)degrees, V=17841(10)angstrom(3), Z=4. Compound 1 contains a [(SiWWVI)-W-V 11O40Co(2,2 '-bipy)(2) (H2O)](3-) polyoxoanion in which [Co(2,2 '-bipy)(3)(H2O)](2+) is covalently bonded to the alpha-Keggin-type heteropolyanion [(SiWWVI)-W-V O-11(40)](5-) via a terminal oxygen.