Vanadium: Polyoxometalate Chemistry

Abstract

In this article, we shed light on inorganic and organic modifications of polyoxometalate structures incorporating single or multiple vanadium centers and of structures mainly based on vanadium‐oxo units. Vast reduction–oxidation chemistry of vanadium combined with changes in magnetic properties makes these structurally versatile compounds attractive candidates for applications in various areas of molecular science and engineering.

In Situ Ligand-Transformation-Involved Synthesis of Inorganic–Organic Hybrid Polyoxovanadates as Efficient Heterogeneous Catalysts for the Selective Oxidation of Sulfides

“…6−8 As a remarkable branch of POMs, polyoxovanadate (POV)-based inorganic−organic hybrids are of considerable interest not only because of their remarkable properties such as magnetism 9 and catalysis and fluorescence 10,11 but also because of their diverse architectures. 12,13 In the synthesis of POV-based hybrids with various structures and outstanding properties, on the one hand, the selection and design of organic ligands is very important. A universal pathway is to introduce the organic ligands into the reaction system to construct POV-based hybrids.…”

“…More and more attention has been paid to the preparation of inorganic–organic hybrids based on polyoxometalates (POMs) because of their potential applications in the field of catalysis, − batteries, supercapacitors, and photochemistry and electrochemistry. − As a remarkable branch of POMs, polyoxovanadate (POV)-based inorganic–organic hybrids are of considerable interest not only because of their remarkable properties such as magnetism and catalysis and fluorescence , but also because of their diverse architectures. , In the synthesis of POV-based hybrids with various structures and outstanding properties, on the one hand, the selection and design of organic ligands is very important. A universal pathway is to introduce the organic ligands into the reaction system to construct POV-based hybrids.…”

Decoding the role of encapsulated ions in the electronic and magnetic properties of mixed-valence polyoxovanadate capsules {X@V22O54} (X = ClO4−, SCN−, VO2F2−): a combined theoretical approach

“…catalysis, [1][2][3] biochemistry, materials engineering and molecular magnetism, 4 or are envisaged as components of technological applications including light-emitting diodes, 5 redox flow batteries for large-scale energy storage, 6 memory devices, 7 quantum computing and magnetic spintronic devices. 8 POVs can be functionalised by various organic and inorganic moieties 9,10 or by guest ions 11 encapsulated in the POV host-cages, 12 giving rise to a diversity of chemical and physical properties which can be tuned to obtain desired effects.…”

Insertion of VIVIons into the Polyoxotungstate Archetype {As4W40}

“…The incorporation of V ions in the wheel-like structures of polyoxometalates (POMs) − provides interesting opportunities , to use V­(3d) states for controlled electron transport and multiple-state-resistive (memristive) switching. , The wheel-shaped POM framework is envisaged here to prevent the hybridization of V-centered molecular orbitals with electrode metal surfaces. In reduced POMs containing vanadium, vanadyl (VO 2+ ) groups act as electron-spin carriers, allowing for cooperative “molecular charge–redox–spin state” effects.…”