ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

A new Keggin-type heteropolyoxometalates compound built up by coordinated cadmium

Hang Xiao, Xiao-Yuan Wu, Ming-Xue Yang, Lang Lin, Shuai Li, Xin-Yuan Chen, and Xiao-Yu Jiang

Fujian University of Technology, Fuzhou, China

E-mail: xyjiang@fjut.edu.cn

Abstract: A new Keggin-type heteropolyoxometalates compound, {[Cd(DMA)₄]₂(bibp)(SiW₁₂O₄₀)}_n (1), (DMA = N, N-dimethylacetamide, bibp = 4,4′-bis(1-imidazolyl) biphenyl) has been synthesized and characterized by single-crystal X-ray diffraction, IR spectrum, elemental analysis, powder X-ray diffraction, thermogravimetric (TG) analysis and electrochemical analysis. Compound 1 is crystallized in orthorhombic with Pbca space group. The [SiW₁₂O₄₀]⁴⁻ anions and bibp ligands are linked by coordinated Cd²⁺ ions alternately into a zigzag-like chain, and the chains are extended into a three-dimensional (3D) framework by the C–H···O hydrogen bonds. The cyclic voltammetry analyses show that compound 1 presences of W-centered reversible redox processes and that 1 has electrocatalytic activities towards the reduction of nitrite.

Keywords: Heteropolyoxometalate ; Coordinated cadmium ; Crystal structure ; Hydrogen bonds ; Electrochemical behavior 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00738-5

Chemical Papers 73 (9) 2165–2170 (2019)