3D-architecture via self-assembly of Krebs-type polyoxometalate {[Na10(H2O)26][Sb2W20Zn2O70(H2O)6]}. (15th November 2018)

• Record Type: Journal Article
• Authors: Ni, Lubin; Xu, Hongjie; Li, Huan; Zhao, Hongxia; Diao, Guowang
• Is Part Of: Polyhedron. Volume 155(2018)
• Page Start: 59
• Page End: 65
• Publication Date: 2018-11-15
• Subjects: Krebs-type POM -- 3D-architecture -- Crystal structure -- Na+ cations -- Oxidation catalysis; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2018.08.036
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: A 3D polyoxometalate frameworks are obtained from Zn 2+ /Na + -directed assembly of the {[Na10 (H2 O)26 ][Sb2 W20 Zn2 O70 (H2 O)6 ]}{Zn2 W2 } building block with new topology. Abstract: A novel Krebs -type polyoxometalate [Na10 (H2 O)26 ][Sb2 W20 Zn2 O70 (H2 O)6 ]{Zn2 W2 } (1) was fabricated from one-pot transformations of the trilacunary Keggin -type [B-α-SbW9 O33 ] 9− precursor, followed by Zn 2+ /Na + -assisted self-assembly of the Krebs -type polyanion. The{Zn2 W2 } polyanion was further self-assembled into 3D architecture with new topology by adjusting Na + cations. The compound{Zn2 W2 } (1) was fully characterized with a wide range of analytical methods, including single crystal/powder X-ray diffraction, thermogravimetric analysis (TGA) and various spectroscopic techniques (FT-IR, Raman, UV–vis). Electrochemical performance of{Zn2 W2 } polyanion was also investigated by cyclic voltammetry (CV) in sodium acetate buffer solution. Moreover, compound{Zn2 W2 } (1) is an effective catalyst for the oxidation of cyclohexanol with hydrogen peroxide.