摘要

A methylphenylsilyl group-substituted derivative [(C4H9)(4)N](3)[alpha-A-PW9O34(C6H5SiCH3)(3)] (1) has been obtained by reaction of the trivacant [alpha-A-PW9O34](9-) anion with dichloromethylphenylsilane C6H5SiCH3Cl2 in acetonitrile. The new complex was characterized by elemental analysis, IR spectra, UV spectra, thermogravimetric analysis and X-ray crystallography. The compound 1 crystallizes in the trigonal space group R3m, with lattice constants a=2.261 3(2) nm, b=2.261 3(2) nm, c=1.797 6(4) nm, V=7.960 2(18) nm(3), and Z=3. The polyoxoanion [alpha-A-PW9O34(C6H5SiCH3)(3)](3-) has a structure of virtual C-3n, symmetry with three C6H5SiCH3 groups grafted on the surface of the trivacant tungstophosphate and displays an "open-structure". CCDC: 830334.