Three new organic-inorganic compounds based on similar molybdenum-vanadium clusters and different types of copper complexes

Vanadium coordination compounds, [VO2L]·(CH3OH) (1a and 1b), were prepared from the reaction of tridentate hydrazone ligand, [HL=(E)‐4‐amino‐N′‐(1‐(pyridin‐2‐ylethylidene)benzohydrazide] with NH4VO3 and V2O5, respectively. These compounds were characterized by various analytical methods, and the structures of 1a and 1b were determined by single crystal X‐ray analysis which indicated that they have the same composition but crystallized in different unit cells and can be considered as polymorphs. The silica‐supported catalyst (Si‐VO2L) was obtained by immobilization of 1 on the surface of silica using propionyl chloride‐functionalized silica gel. Si‐VO2L was characterized by thermal gravimetric analysis (TGA), energy‐dispersive X‐ray spectroscopy (EDX), Fourier‐transform infrared (FT‐IR) spectroscopy, diffuse‐reflectance spectroscopy (DRS), X‐ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and X‐ray diffraction analysis (XRD) and was employed as heterogeneous catalyst in the oxidation of styrene derivatives, and aqueous H2O2 was used as the green oxidant. Si‐VO2L was recovered several times, and characterized by various analytical methods. The results indicated its high stability. The effects of parameters such as temperature, the ratio of reagents, and nature of solvent on selectivity and activity of Si‐VO2L were investigated. The results indicated that both of the steric and electronic effects of the substituents on the phenyl ring of styrene can affect the selectivity and activity of the products. Electron withdrawing groups decrease the activity of the substrate and electron donating groups increase the activity.

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Investigation of the substituent effects on the oxidation of styrene derivatives by silica‐supported heterogeneous oxidovanadium(V) coordination compound

Heydari

Bikas

Shaterian

et al. 2022

Applied Organom Chemis

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Effect of heteropoly acids on structure, electrochemical behavior, acidic properties and catalytic activity of zwitterionic-type ionic liquid

Rafiee

Shahebrahimi

2019

Inorganica Chimica Acta

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Recent reports on vanadium based coordination polymers and MOFs

Gupta¹

2022

Reviews in Inorganic Chemistry

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Coordination polymers (CP) and metal-organic frameworks (MOF) have become a topic of immense interest in this century primarily because of the structural diversity that they offer. This structural diversity results in their multifaceted utility in various fields of science and technology such as catalysis, medicine, gas storage or separation, conductivity and magnetism. Their utility inspires a large variety of scientists to engage with them in their scientific pursuit thus creating a buzz around them in the scientific community. Metals capable of forming CPs and MOFs are primarily transition metals. Among them vanadium-based CPs and MOFs demand detailed discussion because of the unique nature of vanadium which makes it stable in many oxidation states and coordination number. Vanadium’s versatility imparts additional structural marvel and usefulness to these CPs and MOFs.

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Three new organic-inorganic compounds based on similar molybdenum-vanadium clusters and different types of copper complexes

Cited by 3 publications

References 32 publications

Investigation of the substituent effects on the oxidation of styrene derivatives by silica‐supported heterogeneous oxidovanadium(V) coordination compound

Investigation of the substituent effects on the oxidation of styrene derivatives by silica‐supported heterogeneous oxidovanadium(V) coordination compound

Effect of heteropoly acids on structure, electrochemical behavior, acidic properties and catalytic activity of zwitterionic-type ionic liquid

Recent reports on vanadium based coordination polymers and MOFs

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