Vanadium in inorganic chemistry: excerpts from the 8th International Vanadium Symposium
Welcome to this Dalton Transactions themed issue entitled “Vanadium in Inorganic Chemistry”, with a selection of papers presented at the 8th International Vanadium Symposium.
Catalysis science of supported
vanadium oxide catalysts
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.
The role of vanadium haloperoxidases in the formation of volatile brominated compounds and their impact on the environment
In this perspective we discuss the origin of bromoform in oceans and coastal waters and the role of (vanadium) haloperoxidases.
Ion pumps as biological targets for decavanadate
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.
The future of/for vanadium
Vanadium's natural role initiates the development of pro-drugs in medication, and sets off applications of ‘vanadium oxides’ in catalysis and batteries.
Vanadium-catalyzed enantioselective Friedel–Crafts-type reactions
First vanadium-mediated enantioselective Friedel–Crafts (FC)-type reactions were established using the dinuclear vanadium complex.
Coordination chemistry may explain pharmacokinetics and clinical response of vanadyl sulfate in type 2 diabetic patients
Total serum vanadium is not the biologically active vanadium pool in type 2 diabetic patients orally given vanadyl sulfate.
vanadium oxide and silver vanadium phosphorous oxide dissolution kinetics: a mechanistic study with possible impact on future ICD battery lifetimes
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.
Raft localization of Type I Fcε receptor and degranulation of RBL-2H3 cells exposed to decavanadate, a structural model for V2O5
Decavanadate induces raft localization of Fcε receptor and degranulation of RBL-2H3 cells upon exposure to this structural analog of V2O5.
Discrete spherical hexadecavanadates incorporating a bromide with oxidative bromination activity
Under the oxidative bromination conditions with strong acids, discrete polyoxovanadates, [V16O38(X)]4−, were isolated.
Vanadate-dependent bromoperoxidases from Ascophyllum nodosum in the synthesis of brominated phenols and pyrroles
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.
Vanadium(IV/V)–p-dioxolene temperature induced
electron transfer associated with ligation/deligation of solvent molecules
Temperature dependent electron transfer of a VV/IV–p-dioxolene system associated with an interconversion of the vanadium coordination sphere from trigonal bipyramidal to octahedral.
Preliminary anti-cancer photodynamic therapeutic in vitro studies with mixed-metal binuclear ruthenium(II)–vanadium(IV) complexes
Photodynamic therapeutic studies are reported with ruthenium(II)–vanadium(IV) complexes.
A new series of heteroleptic oxidovanadium(IV) compounds with
phenanthroline-derived co- ligands: selective Trypanosoma cruzi growth inhibitors
Novel vanadium complexes showed high activity and selectivity towards Trypanosoma cruzi.
Antitumor properties of a vanadyl(IV) complex with the
flavonoid chrysin [VO(chrysin)2EtOH]2 in a human osteosarcoma model: the role of oxidative stress and apoptosis
Antitumor properties of a vanadium(IV) complex with chrysin were evaluated in MG-63 osteosarcoma cells, studied by cyto-, genotoxicity and apoptosis.
A sustainable two-phase procedure for V-catalyzed
toluene oxidative bromination with H2O2–KBr
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.
Chiral vanadium(V) complexes with 2-aminoglucose Schiff-base ligands and their solution configurations: synthesis, structures, and DFT calculations
For oxidovanadium complexes with chiral ligands the configuration of the diastereomers has been unambiguously assigned in solution and solid state.
The vanadyl chelate bis(acetylacetonato)oxovanadium(IV) increases the fractional uptake of 2-(fluorine-18)-2-deoxy-D-glucose by cultured human breast carcinoma cells
Treatment of mice with bis(acetylacetonato)oxovanadium(IV) prior to PET imaging enhances preferential uptake of FDG into malignant tissue by several-fold.
Metal ion selectivity of the vanadium(V)-reductase Vanabin2
The high selectivity of the V(V)-reductase, Vanabin2, may account for the metal ion selectivity of vanadium accumulation in ascidians.
A novel VIVO–pyrimidinone complex: synthesis, solution speciation and human serum protein binding
A new pyrimidinone is synthesized and the binding of its VIVO2+ complexes with serum proteins is reported.
Synthesis of vanadium(V) hydrazido complexes with
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.
Vanadium complexes having [VO]2+, [VO]3+ and [VO2]+ cores with hydrazones of 2,6-diformyl-4-methylphenol: synthesis, characterization, reactivity, and catalytic potential
[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 binuclear oxovanadium(V) complex as a
catalyst in combination with pyrazinecarboxylic acid ( PCA) for efficient alkane oxygenation by H2O2
A new catalytic system based on V(V) and PCA for the oxidation of alkanes is described.
About this collection
This themed issue, guest edited by Professors Debbie Crans and Craig McLauchlan, contains a selection of articles from leading researchers working in the area of vanadium chemistry, including participants of the 8th International Symposium on Vanadium.