Novel Isopolyoxotungstate [H2W11O38]8鈥?/sup> Based Metal Organic Framework: As Lewis Acid Catalyst for Cyanosilylation of Aromatic Aldehydes

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• 作者：Qiuxia Han ; Xueping Sun ; Jie Li ; Pengtao Ma ; Jingyang Niu
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：June 16, 2014
• 年：2014
• 卷：53
• 期：12
• 页码：6107-6112
• 全文大小：374K
• 年卷期：v.53,no.12(June 16, 2014)
• ISSN：1520-510X

文摘

A novel polyoxometalate-based metal organic framework (POMOF) constructed from isolated isopolyoxotungstate [H₂W₁₁O₃₈]^{8鈥?/sup> cluster, {[Cu₂(bpy)(H₂O)_5.5]₂[H₂W₁₁O₃₈]路3H₂O路0.5CH₃CN} (1, where bpy = 4,4鈥?bpydine), has been synthesized under solvothermal conditions and charaterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. In 1, {W₁₁} clusters are alternately linked by two [Cu(2)(H₂O)_1.5(O_t)₃(N)]2+ cations in an unexpected end-to-end fashion leading to a one-dimensional (1D) chain. Adjacent 1D chains are linked through Cu(1)鈥揵py鈥揅u(2) in an opposite direction to form a two-dimensional (2D) wavelike sheet along the ab plane. These 2D sheets are further stacked in a parallel fashion giving rise to the 1D channels with copper(II) cations aligned in the channels. The resulting POMOF acted as a Lewis acid catalyst through a heterogeneous manner to prompt cyanosilylation with excellent efficiency.}