A Crown-Shaped Ru-Substituted Arsenotungstate for Selective Oxidation of Sulfides with Hydrogen Peroxide

Chemistry : a European Journal
Mengdan HanJingping Wang

Abstract

An acetate-bridged Ru-substituted arsenotungstate [H2 N(CH3 )2 ]14 [As4 W40 O140 {Ru2 (CH3 COO)}2 ]⋅22 H2 O (1) has been synthesized and structurally characterized. Four Ru atoms occupy the respective lacunary S2 sites of the crown-shaped polyanion [As4 W40 O140 ]28- , and each Ru atom is coordinated by one As atom and five μ2 -O atoms, comprising four from the S2 site and one from the acetate ligand. To the best of our knowledge, this coordination of the Ru atom, with an Ru-As bond length of 2.377(3)-2.387(3) Å, is unprecedented in polyoxometalate (POM) chemistry. Notably, 1 exhibits high efficiency, excellent selectivity, and good recyclability for the oxidation of sulfides with hydrogen peroxide (H2 O2 ). Catalytic oxidation of various sulfides in the presence of 1 gives superior conversion and selectivity for sulfones in acetonitrile, whereas sulfoxides are obtained in methanol.

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Citations

Sep 7, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Qiaofei XuJingyang Niu
Feb 19, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Huafeng LiJingping Wang
Jan 28, 2020·Chemistry : a European Journal·Jing Yang NiuJingping Wang
Aug 20, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Zongfei YangJingping Wang
Jun 19, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Rong WanJingping Wang
Jan 9, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Jie LiJian-Fang Ma
Feb 2, 2021·Chemical Communications : Chem Comm·Rong WanJingping Wang
Sep 17, 2021·Chemical Communications : Chem Comm·Zhen LiuJingping Wang

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