Reaction of K2[Ru(NO)Cl5] with K8[γ-SiW10O36] Under Hydrothermal Conditions: Synthesis of [SiW11O39{Ru(NO)}]5–

Metalloligand Hybrid Polyoxometalates for Efficient Selective Photocatalytic Oxidation of Sulfides to Sulfoxides under Visible-Light Irradiation

“…Polyoxometalates (POMs), a specific family of anionic metal oxides, are multinuclear complexes interbridged by transition-metal atoms (Nb, Ta, V, Mo, and W) with oxygen atoms and have many interesting chemical properties and functions. − In the field of catalysis, POMs have been widely utilized as efficient photocatalysts because of their easy structural modifications and analogous semiconductor properties. − However, due to the wide band gaps of POMs, they usually only operate under UV illumination, which limits their effective use of visible light . Therefore, it is necessary to improve the POMs by extending their absorption range to the visible region to give POMs a more efficient photonic behavior.…”

Binuclear Ru(III)-Containing Polyoxometalate with Efficient Photocatalytic Activity for Oxidative Coupling of Amines to Imines

“…11 Polyoxometalates (POMs) are multinuclear complexes interbridged by oxygen atoms and transition metal atoms (Mo, W, V, Nb, Ta) and demonstrate various interesting chemical properties and functions. 12,13 Particularly, POMs can carry out reversible and stepwise multielectron transfer processes and enable the applications in a wide number of fields including analytical chemistry, medicine, materials science, and catalysis. 14−18 In addition, the electron acceptor properties of POMs enable organic molecules adsorbed on its surface and form various hybrid materials with bundled features from both POMs and organic molecules.…”

“…27−30 Particularly, Ru owns a wide range of oxidation states, ranging from Ru(II) to Ru(VI). 12 The incubation of Ru species into the POMs can facilitate multielectron redox reactions, with that, POMs comprising multiple Ru atoms generally exhibit better catalytic performances than those containing a single Ru atom. 31,32 Based on this, Ru-POMs have been used extensively as catalysts for the oxidation of water, sulfides, alcohols, and other organic substrates.…”

“…Polyoxometalates (POMs) are multinuclear complexes interbridged by oxygen atoms and transition metal atoms (Mo, W, V, Nb, Ta) and demonstrate various interesting chemical properties and functions. , Particularly, POMs can carry out reversible and stepwise multielectron transfer processes and enable the applications in a wide number of fields including analytical chemistry, medicine, materials science, and catalysis. − In addition, the electron acceptor properties of POMs enable organic molecules adsorbed on its surface and form various hybrid materials with bundled features from both POMs and organic molecules. − Based on the fact that many POMs possess large energy gaps residing in the UV region, thereby it is essential to develop more visible light responsive POM-based catalysts, typically by incubating metal cores that can absorb visible lights into POMs . Lacunary POMs (After the removal of one or several {MOx} units (M = W and Mo) from the saturated POMs) typically possess structurally well-defined and highly reactive vacant sites that are greatly vital for the incorporation of heterometals .…”

“…For many transition metal-substituted POMs, ruthenium containing POMs (Ru-POMs) have become promising oxidative catalysts due to their high catalytic activities. − Particularly, Ru owns a wide range of oxidation states, ranging from Ru­(II) to Ru­(VI) . The incubation of Ru species into the POMs can facilitate multielectron redox reactions, with that, POMs comprising multiple Ru atoms generally exhibit better catalytic performances than those containing a single Ru atom. , Based on this, Ru-POMs have been used extensively as catalysts for the oxidation of water, sulfides, alcohols, and other organic substrates. − According to previous work, the Ru-POMs promoted catalytic reactions generally require heating and the assistance of oxidants such as H 2 O 2 and tert -butyl hydroperoxide. , Therefore, from the perspective of green chemistry, more and more research attention has been invested on the development of visible light-driven catalysts using cleaner and more economical molecular oxygen (O 2 ) as the oxidant.…”