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

A new isopolyoxovanadate compound [Zn(phen)(3)](2)center dot(V4O12)center dot phen center dot 20H(2)O (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, pi-pi 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.

Automated summary

A new isopolyoxovanadate compound has been synthesized and characterized using various techniques. The compound forms a stable supramolecular structure in the solid state and exhibits excellent electrocatalytic activity.