Abstract A series of eight rare-earth substituted antimony tungstates with the formulae [((RE)4(H2O)6Sb6O4)(SbW10O37)2(SbW8O31)2]22– [(RE)III = Y(1), Gd(2), Tb(3), Dy(4), Ho(5), Er(6), Tm(7), Yb(8)] has been synthesized under ambient conditions. The compounds were isolated using rare-earth salts and Na9[B-α-SbW9O33]•19.5 H2O as precursors along with sodium dihydrogen phosphate in 1 M NaCl solution. The addition of dihydrogen phosphate was found to be a crucial step for the isolation of these polyanions. The polyanions were characterized by various analytical techniques such as single crystal X-ray diffraction (1a – 6a) (SC-XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA). The compounds were found to show efficient heterogeneous catalytic activity for oxidation of thioethers.

中文翻译：

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Na22[((RE)4(H2O)6Sb6O4)(SbW10O37)2(SbW8O31)2] [(RE)III = Y, Gd, Tb, Dy, Ho, Er, Tm, Yb] 的合成：合成、表征和催化应用

摘要 一系列八种稀土取代的钨酸锑，其化学式为 [((RE)4(H2O)6Sb6O4)(SbW10O37)2(SbW8O31)2]22– [(RE)III = Y(1), Gd(2) )、Tb(3)、Dy(4)、Ho(5)、Er(6)、Tm(7)、Yb(8)] 已在环境条件下合成。使用稀土盐和Na9[B-α-SbW9O33]•19.5 H2O 作为前体以及磷酸二氢钠在1 M NaCl 溶液中分离化合物。发现添加磷酸二氢是分离这些聚阴离子的关键步骤。聚阴离子通过各种分析技术进行表征，例如单晶 X 射线衍射 (1a – 6a) (SC-XRD)、傅里叶变换红外光谱 (FT-IR)、热重分析 (TGA)。发现这些化合物对硫醚的氧化显示出有效的多相催化活性。