A neoteric hepta-nuclear Ti-oxo-cluster-substituted tetrameric tungstoantimonate [H2N(CH3)2]22Na18Ti7O6(SbW9O33)4}2·124H2O (1) has hydrothermally been synthesized and tested by single-crystal/powder X-ray diffraction, IR spectra, and thermal analysis. The glamorous feature of this tetrameric polyoxoanion is an uncommon hepta-nuclear Ti-oxo-cluster octahedron [Ti7O6]16+ enclosed in four [B-α-SbW9O33]9– building units. As a heterogeneous catalyst, the investigation on catalytic oxidation with H2O2 for multiple thioethers indicated that 1 possesses high conversion and remarkable selectivity. Additionally, 1 exhibits good stability and excellent recyclability.
通过
水热法合成了一种新七核
钛氧簇取代的四元
钨锑酸盐[H2N(
CH3)2]22Na18Ti7O6(SbW9O33)4}2-124H2O (1),并通过单晶/粉末 X 射线衍射、红外光谱和热分析进行了测试。这种四元多
氧阴离子的迷人之处在于,在四个[B-α-SbW9O33]9-构筑单元中包含了一个不常见的七核
钛氧簇八面体[Ti7O6]16+。作为一种异相催化剂,用
H2O2 对多种
硫醚进行催化氧化的研究表明,1 具有高转化率和显著的选择性。此外,1 还具有良好的稳定性和出色的可回收性。