Novel Isopolyoxotungstate [H2W11O38](8-) Based Metal Organic Framework: As Lewis Acid Catalyst for Cyanosilylation of Aromatic Aldehydes

作者：Han, Qiuxia^*; Sun, Xueping; Li, Jie; Ma, Pengtao; Niu, Jingyang

来源：Inorganic Chemistry, 2014, 53(12): 6107-6112.

DOI：10.1021/ic5004879

• CELTIC-RING ISOPOLYOXOTUNGSTATE
• COORDINATION POLYMER
• CRYSTAL-STRUCTURES
• POLYOXOMETALATE
• HYBRID
• CLUSTER
• IONS
• DECATUNGSTATE
• STABILITY
• CHEMISTRY

A novel polyoxometalate-based metal organic framework (POMOF) constructed from isolated isopolyoxotungstate [H2W11O38](8-) cluster, {[Cu-2(bpy)-(H2O)(5.5)](2)[H2W11O38]center dot 3H(2)O center dot 0.5CH(3)CN} (1, where bpy = 4,4'-bpydine), has been synthesized under solvothermal conditions and charaterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. In 1, {W-11} 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 ID chains are linked through Cu(1)-bpy-Cu(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.

• 出版日期2014-6-16
• 单位洛阳理工学院; 河南大学