α–γ-Type [Mo 8 O 26 ] 4– -Containing Metal–Organic Complex Possessing Efficient Catalytic Activity toward the Oxidation of Thioether Derivatives

作者：Xiuli Wang, Xiuli Wang, Jing Yuan Zhang, Zhi Chang, Zhong Zhang, Xiang Wang, Xiang Wang, Hong Yan Lin, Zi Wei Cui · 发表于：Inorganic Chemistry · 年份：2021 · DOI：10.1021/acs.inorgchem.0c03738 · 被引用次数：53 · 研究领域：Polyoxometalates: Synthesis and Applications、Metal-Organic Frameworks: Synthesis and Applications、Advanced Nanomaterials in Catalysis

In this work, a new α–γ-type [Mo 8 O 26 ] 4– anion was first synthesized and characterized by single-crystal X-ray diffraction analysis and was obtained by introducing molybdate to the synthesis of metal–organic complex (MOC) under hydrothermal conditions. An octamolybdate-based MOC, namely, {[Cu 8 (H 2 O) 6 ](dpyh) 4 (α–γ-Mo 8 O 26 ) }·(β-Mo 8 O 26 )·8.5H 2 O (H 2 dpyh = N, N -bis(3-pyrazolamide)-1,2-hexahydrobenzene), was obtained. The α–γ-type [Mo 8 O 26 ] 4– anion was composed of four MoO 6 octahedra and four MoO 5 trigonal bipyramids by sharing their edges and corners. The title complex exhibited a 1D structure in which an α–γ-type [Mo 8 O 26 ] 4– anion was connected with [Cu 4 (dpyh) 2 ] units in a staggered manner. Under optimized conditions, complex 1 as the catalyst can achieve a highly efficient conversion (more than 99%) of thioanisole within 30 min and above 99% selectivity toward sulfoxide. Furthermore, efficient catalytic oxidation of thioether derivatives was also performed with 1 as the catalyst. In addition, the stable electrochemical sensing performance and adsorption capacity toward organic dyes were tested.