This paper reports the synthesis, properties and structure of (NH_4)_(12)[Cu_3(H_2O)_3(SbW_9O_33)_2]· 11H_2O. The compound was prepared by the depolymerization reaction of (NH4_)_(18)[(NH_4)Sb_9W21O_(86)]. nH_2O,...This paper reports the synthesis, properties and structure of (NH_4)_(12)[Cu_3(H_2O)_3(SbW_9O_33)_2]· 11H_2O. The compound was prepared by the depolymerization reaction of (NH4_)_(18)[(NH_4)Sb_9W21O_(86)]. nH_2O,which was proposed firstly as a method of preparing new heteropoly tungstoantimonate(Ⅲ). Its properties were characterized by IR, Raman, UV-VS spectra, TG-DTA thermal analysis, and X-ray single ctystal analysis. The crystal is orthorhombic, with space group D_(2h)^(16)-Pnma. The crystal data are: a=15.423(4), b=19.307(6), c=30.275(6), V=9015.0~3, Z=4, Dc=3.881 g/cm_3. The structure has been refined by full-matrix least squares method to a final R factor of 0.064 for 2652 reflections collected at room temperature. The heteropoly anion contains two a-B-SbW_9O_(33) subunits joined by three square-pyramidal CuO_4(OH_2).展开更多
文摘This paper reports the synthesis, properties and structure of (NH_4)_(12)[Cu_3(H_2O)_3(SbW_9O_33)_2]· 11H_2O. The compound was prepared by the depolymerization reaction of (NH4_)_(18)[(NH_4)Sb_9W21O_(86)]. nH_2O,which was proposed firstly as a method of preparing new heteropoly tungstoantimonate(Ⅲ). Its properties were characterized by IR, Raman, UV-VS spectra, TG-DTA thermal analysis, and X-ray single ctystal analysis. The crystal is orthorhombic, with space group D_(2h)^(16)-Pnma. The crystal data are: a=15.423(4), b=19.307(6), c=30.275(6), V=9015.0~3, Z=4, Dc=3.881 g/cm_3. The structure has been refined by full-matrix least squares method to a final R factor of 0.064 for 2652 reflections collected at room temperature. The heteropoly anion contains two a-B-SbW_9O_(33) subunits joined by three square-pyramidal CuO_4(OH_2).
