Thanks to a homemade dynamic vacuum system, fully crystallized VO2 (M) is successfully synthesized in merged step of vanadyl ethylene glycolate (VEG) decomposition and crystallization at high temperatures (>500 °C). During the whole process, vanadium valence (+4) well maintained, VEG microstructure plays an important role end-product size shape. Finally, suggested route appears suitable for mas...

The title compound, penta-strontium tris-[penta-fluorido-oxido-vanadate(IV)] fluoride trihydrate, was obtained under hydro-thermal conditions. Its crystal structure has been refined from intensity data of a non-merohedrally twinned crystal. Two domains in almost equal proportions are related by a -180° rotation along the reciprocal [101]* vector. The structure may be considered as a derivative ...

The oxidative dehydrogenation (ODH) of propane to propylene by supported vanadia catalysts has received much attention in recent years, but different reactivity trends have been reported for this catalytic reaction system. In the present investigation, the origin of these differing trends are investigated with synthesis of supported V/SiO2, V/TiO2, and V/Al2O3 catalysts prepared with three diff...

The presence of drugs in aquatic bodies is a prevailing issue, and their removal by adsorption an effective treatment. Among the adsorbents, those based clay minerals have been proposed. Bentonite mineral that widely studied as adsorbent due to its unique physicochemical properties, such cation exchange capacity (CEC), intercalation, adsorption. properties bentonites can be improved through che...

The title Schiff base complex, [V(C(13)H(7)BrClNO(2))(CH(3)O)O(CH(3)OH)], features a vanadyl group, a tridentate Schiff base ligand, and coordinated methanol and methano-late ligands. The NO(5) donor set is based on a distorted octa-hedron. Helical supra-molecular chains along [010] are found in the crystal structure mediated by O-H⋯O hydrogen bonds formed between the coordinating methanol mol-...

The title oxidovanadium(V) complex, [V(C(15)H(11)N(3)O(5))(CH(3)O)O], was obtained by the reaction of 2-hy-droxy-3-meth-oxy-benzaldehyde, 4-nitro-benzohydrazide and vanadyl sulfate in methanol. The V(V) atom is five-coordinated by the two O and one N donor atoms of the Schiff base ligand, one methano-late O atom and one oxido O atom, forming a distorted square-pyramidal geometry.

Scanning tunneling microscopy (STM) was used to determine the structure of cleaved, single crystal surfaces of V20 5, V60 13, Mo 180 52, and Mo80 23. Constant current images were recorded in ultrahigh vacuum and in air. By imaging well-defined surfaces that exhibit structural and chemical similarities, and comparing the observations to the known bulk structures, it is possible to establish a re...

Present investigation was planned to evaluate the therapeutic effectiveness of chelating agents against vanadium intoxication on blood and reproductive organs of rats. Male and female albino rats were injected vanadyl sulphate (7.5 mg/kg, po, for 21 days, 5 days in a week). Chelating agents tiron (T) alone and in combination with lipoic acid (LA), vitamin E (vit E) and selenium (Se) were given ...