Themed collection Vanadium in Inorganic Chemistry

Welcome to this Dalton Transactions themed issue entitled “Vanadium in Inorganic Chemistry”, with a selection of papers presented at the 8^th International Vanadium Symposium.

Supported vanadium oxide catalysts contain a vanadium oxide phase deposited on a high surface area oxide support (e.g., Al₂O₃, SiO₂, TiO₂, etc.) and have found extensive applications as oxidation catalysts in the chemical, petroleum and environmental industries.

In this perspective we discuss the origin of bromoform in oceans and coastal waters and the role of (vanadium) haloperoxidases.

E1–E2 ATPases, a family of cation pump enzymes, are known targets for specific drugs including decavanadate (V₁₀). Decavanadate and other polyoxometalates need to cross the bilayer before targeting the ion pumps. In contrast, established organic drugs do not apparently need to cross the membrane, and probably for V₁₀ this mechanism of action cannot be completely excluded.

Vanadium's natural role initiates the development of pro-drugs in medication, and sets off applications of ‘vanadium oxides’ in catalysis and batteries.

First vanadium-mediated enantioselective Friedel–Crafts (FC)-type reactions were established using the dinuclear vanadium complex.

Total serum vanadium is not the biologically active vanadium pool in type 2 diabetic patients orally given vanadyl sulfate.

The kinetic results of Ag and V dissolution from silver vanadium oxide and two silver vanadium phosphorous oxides in electrolyte provide mechanistic insight towards a battery failure mode.

Decavanadate induces raft localization of Fcε receptor and degranulation of RBL-2H3 cells upon exposure to this structural analog of V₂O₅.

Under the oxidative bromination conditions with strong acids, discrete polyoxovanadates, [V₁₆O₃₈(X)]⁴⁻, were isolated.

In oxidation catalysis, bromoperoxidases I and II from the brown alga Ascophyllum nodosum turn over hydrogen peroxide and bromide similarly fast, providing in morpholine-4-ethanesulfonic acid (MES)-buffered aqueous tert-butanol (pH 6.2) molecular bromine as reagent for electrophilic hydrocarbon bromination.

Temperature dependent electron transfer of a V^V/IV–p-dioxolene system associated with an interconversion of the vanadium coordination sphere from trigonal bipyramidal to octahedral.

Photodynamic therapeutic studies are reported with ruthenium(II)–vanadium(IV) complexes.

Novel vanadium complexes showed high activity and selectivity towards Trypanosoma cruzi.

Antitumor properties of a vanadium(IV) complex with chrysin were evaluated in MG-63 osteosarcoma cells, studied by cyto-, genotoxicity and apoptosis.

Efficient V(v) and Mo(VI) catalysed two-phase bromination of toluene is reported with H₂O₂ as primary oxidant and KBr as brominating intermediates source. Recycling of the catalytic phase is possible. Useful information on the V-peroxido chemistry was obtained.

For oxidovanadium complexes with chiral ligands the configuration of the diastereomers has been unambiguously assigned in solution and solid state.

Treatment of mice with bis(acetylacetonato)oxovanadium(IV) prior to PET imaging enhances preferential uptake of FDG into malignant tissue by several-fold.

The high selectivity of the V(V)-reductase, Vanabin2, may account for the metal ion selectivity of vanadium accumulation in ascidians.

A new pyrimidinone is synthesized and the binding of its V^IVO²⁺ complexes with serum proteins is reported.

The vanadium(V) hydrazido complexes with the tris(2-hydroxyphenyl)amine ligands were designed to reveal the influence of the coordination from the apical nitrogen and the substituent of the tris(2-hydroxyphenyl)amine moiety on the vanadium center.

[VO]²⁺-, [VO]³⁺- and [VO₂]⁺-complexes with hydrazones of 2,6-diformyl-4-methylphenol were isolated and used as functional models of vanadium dependent haloperoxidases.

A new catalytic system based on V(V) and PCA for the oxidation of alkanes is described.