Synthesis, Crystal Structure, and Electrochemical Properties of an Isopolyoxovanadate Compound Modified Transition-Metal Complex Based on [V4O12]4−

Abstract

A new isopolyoxovanadate compound [Zn(phen)3]2·(V4O12)·phen·20H2O (phen = 1,10-phenathroline) (1) has been synthesized in aqueous solution and characterized using IR and UV/Vis spectroscopy, elemental analysis, thermal gravimetric analysis, powder, single-crystal X-ray diffractions, and field emission scanning electron microscopy. The molecular structure of 1 exists as two kinds of [V4O12]4− polyoxoanions: distorted chair-like and coplanar conformations, two independent [Zn(phen)3]2+ units and free phen. In the solid state, compound 1 forms a stable three-dimensional supramolecular structure through electrostatic interactions, π–π stacking interactions and multiform hydrogen bonds. The electrocatalytic activity and determination of DA of compound 1 have been studied by cyclic voltammetry and differential pulse voltammetry, respectively.

Experimental and Theoretical Studies on Two Dual-Functional Organic–Inorganic Hybrids Based on [V4O12]4– Clusters

“…Electrocatalysis is one of the important properties owing to the instinctive abilities of transferring and storing electrons. − POM-based compounds are often selected to explore electrocatalytic redox reactions of KBr, H 2 O 2 , dopamine, nitrite (NO 2 – ), AA, and so on. − In this work, the electrocatalytic performances of 1 – 2 -CPEs are studied toward NO 2 – reduction and AA oxidation reaction, respectively.…”