Efficient Oxidative Desulfurization by Calixarene-Supported “Pineapple-Like” Polyoxometalates,Crystal Growth & Design

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Efficient Oxidative Desulfurization by Calixarene-Supported “Pineapple-Like” Polyoxometalates
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2023-10-02 , DOI: 10.1021/acs.cgd.3c00800
Yuanyuan Zhang ₁ , Yaomei Fu ₂ , Liang Zhao _{1,

3} , Chao Qin ₁ , Xinlong Wang ₁ , Baoli Li _{1,

3}

Affiliation

Keggin-type polyoxometalates (POMs) are regarded as excellent nanosized inorganic building blocks for the construction of multifunctional hybrids due to their ease of covalent modification. Two new calixarene-supported Keggin-type polyoxometalates [NH₂Me₂]₇[TM₄(TC4A)PW₈O₃₂]·3CH₃OH (TM = Co (1), Ni (2), H₄TC4A = p-tert-butylthiacalix[4]arene) with “pineapple-like” shapes have been synthesized under solvothermal conditions. In these structures, the [TM₄(TC4A)] building block binds to a rare tetra-lacunary Keggin-type [PW₈O₃₂] polyanion via W–O–TM bonds. Notably, compounds 1 and 2 serve as recyclable heterogeneous catalysts for the high-efficiency catalytic oxidation of different species of thioethers.

中文翻译：

杯芳烃负载的“菠萝样”多金属氧酸盐的高效氧化脱硫

Keggin 型多金属氧酸盐（POM）由于易于共价修饰而被认为是构建多功能杂化物的优异纳米无机结构单元。两种新型杯芳烃负载的Keggin型多金属氧酸盐[NH ₂ Me ₂ ] ₇ [TM ₄ (TC4A)PW ₈ O ₃₂ ]·3CH ₃ OH (TM = Co ( 1 ), Ni ( 2 ), H ₄ TC4A = p-在溶剂热条件下合成了具有“菠萝状”形状的叔丁基硫杂环[4]芳烃。在这些结构中，[TM ₄ (TC4A)] 结构单元通过 W–O–TM 键与罕见的四空位 Keggin 型 [PW ₈ O ₃₂ ] 聚阴离子结合。值得注意的是，化合物1和2作为可回收的多相催化剂，用于不同种类硫醚的高效催化氧化。

更新日期：2023-10-02

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