Various amide derivatives induced Keggin-type SiW12O404−-based cobalt complexes: assembly, structure, electrochemical sensing and dye adsorption properties

Three new [SiW 12 O 40 ] 4− -based complexes assembled from three amide derivative ligands displayed excellent electrochemical sensing activities for BrO 3 − , NO 2 − and Cr( vi ) ions and showed good adsorption capacities for methylene blue and neutral red dyes.