Inorganic–organic hybrid supramolecular architectures based on Keggin polyoxometalates and crown ether: synthesis, crystal structure and electrochemical properties. Issue 48 (10th November 2021)

• Record Type: Journal Article
• Authors: Shi, Jianhang; Zhang, Hongxu; Wang, Peisen; Wang, Pai; Zha, Junjie; Liu, Yi; Gautam, Jagadis; Zhang, Lu-Nan; Wang, Yue; Xie, Ju; Ni, Lubin; Diao, Guowang; Wei, Yongge
• Is Part Of: CrystEngComm. Volume 23:Issue 48(2021)
• Page Start: 8482
• Page End: 8489
• Publication Date: 2021-11-10
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d1ce01203g
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Novel supramolecular assemblies built from Keggin-type polyoxometalate and [18]-crown-6 ether building blocks exhibit unique propeller-like supramolecular host–guest structures. Abstract : Two novel supramolecular assemblies built from Keggin-type polyoxometalate and [18]-crown-6 ether building blocks, (K + )4 ([18]-crown-6)4 (CH3 CN)2 [SiM12 O40 ] (M = Mo (1 ), W (2 )), have been synthesized and characterized via single-crystal/powder X-ray diffraction and a wide range of analytical methods, including FT-IR, UV-vis, Raman, and NMR spectroscopy, thermogravimetric analysis, and density functional theory (DFT) calculations. This POM-based supramolecular architecture is the first example of a Keggin-type POM linked to four 18-crown-6 components forming unique propeller-like supramolecular host–guest structures vi a crown–metal–O(POM) bonds in the forms of the isostructural compounds 1 and 2 . In addition, the electrochemical behaviors and electrocatalytic properties toward the reduction of sodium nitrite (NaNO2 ) were also investigated via cyclic voltammetry in acidic solution.