Vanadium tribromide

Vanadous Bromide, vanadium tribromide, VBr3, is conveniently obtained synthetically. When powdered vanadium is gently warmed with pure, dry bromine, combination takes place readily, considerable heat is evolved and the tribromide is formed. Ferrovanadium alloy gives the same product.7 It is also obtained by the action of pure,... [Pg.46]

Hexammino-vanadium Tribromide, [V(NH3)6]Br3, is prepared by the action of liquid ammonia on vanadium tribromide. Its properties and reactions are similar to those of the corresponding chlorine compound (see p. 42). [Pg.47]

Vanadium Oxymonobromide, VOBr, is prepared by the decomposition of vanadyl dibromide, VOBr2, in vacuo at 360° C. It forms violet, octahedral crystals, density 4-000 at 18° C. On being heated in vacuo at 480° C. it yields vanadium tribromide and vanadous oxide, V203. It is almost insoluble in water and the usual organic solvents.7... [Pg.47]

Bromide Vanadium tribromide VBr , green crystalline solid. [Pg.1667]

Vanadium azide tetrachloride, 4160 Vanadium dichloride, 4112 Vanadium(III) oxide, 4849 Vanadium tetrachloride, 4171 Vanadium tribromide oxide, 0291 Vanadium trichloride, 4153 Vanadium trinitrate oxide, 4758 Vanadium, 4918 Vanadium(V) oxide, 4860... [Pg.2155]

Vanadium Tribromide. VBr3 is formed directly from the reactions of bromine with vanadium or its nitride or carbide... [Pg.5025]

Vanadium azide tetrachloride, 4166 Vanadium dichloride, 4118 Vanadium(III) oxide, 4855 Vanadium tetrachloride, 4177 Vanadium tribromide oxide, 0292 Vanadium trichloride, 4159 Vanadium trichloride oxide, 4151 Vanadium trinitrate oxide, 4763 Vanadium(y) oxide, 4866 Vanadyl azide dichloride, 4090... [Pg.2077]

VBr3 VANADIUM TRIBROMIDE 1765 W309[g] TRITUNGSTEN NONAOXIDE (GAS) 1810... [Pg.1920]

Vanadium oxide tribromide, VOBr3. Dark red deliquescent liquid formed by heating V2O3 plus Brj. [Pg.416]

Vanadium(III) Chloride. Vanadium(III) chloride (vanadium trichloride, VCl ) is a pink-violet sohd, is readily hydrolyzed, and is insoluble in nonpolar solvents but dissolves in donor solvents, eg, acetonitrile, to form coordination compounds. Chemical behavior of the tribromide (VBr ) is similar to that of VCl. ... [Pg.391]

Anhydrous vanadium trichloride or tribromide reacts with acetonitrile to yield green or red-brown solutions. Complexes [VX3(MeCN)3] (X = Cl or Br) crystallize with varying amounts of acetonitrile in the lattice,212 where the IR spectra show the free (2253.5 cm-1) and coordinated (2292 cm-1) acetonitrile. [Pg.476]

Vanadium trichloride or tribromide reacts with thioethers giving [VX3L2] (X = C1 or Br L = SMe2, tetrahydrothiophene or SEt2).288,289 The complex with di-n-propyl sulfide could not be isolated.288 These compounds are oxidized very easily. Solubility, molecular weights and conductance show that they are monomeric and non-ionic. Dipole moments, IR and electronic spectra are consistent with trans trigonal bipyramidal structures. [Pg.481]

It is of interest to note that Meyer and Backa,1 by treating vanadium trichloride and tribromide with liquid ammonia, have recently obtained hexammine derivatives ... [Pg.40]

Hypovanadic Bromide, vanadium tetrabromide, VBr4, has not hitherto been isolated, but it is of interest to note that a double salt of composition VBr4.SbBr3.7HaO has been obtained by dissolving antimony tribromide and vanadium pentoxide in hydrobromic acid and adding bromine. ... [Pg.47]

He found that with ordinary commercial red phosphorus with 98 per cent, phosphorus, there dissolved 0-056 and 0-108 per cent, of phosphorus in respectively 10 and 42 hrs., and with a finely-divided sample 0-092 and 0-116 percent, phosphorus in 10 and 20 hrs. respectively. R. Schenck found that 100 grms. of phosphorus tribromide dissolved 0-2601 grm. of scarlet phosphorus at 172°, and 0-3634 grm. at 184°. E. Baudrimont showed that yellow phosphorus does not attack phosphoryl bromide at the b.p. L. Rosenstein found that soln. of arsenates, and arsenic, antimony, or bismuth salts are not reduced by boiling with red phosphorus but W. Finkelstein found that a nitrobenzene soln. of arsenic trichloride is reduced by yellow phosphorus and arsenic is deposited. 0. Ruff observed that phosphorus reacts with antimony trichloride in the presence of a little aluminium chloride. F. E. Brown and J. E. Snyder observed that vanadium oxytrichloride is without action on red or white phosphorus. [Pg.789]

Metal Halides. Reacts explosively or violently with the following calcium bromide iron(III) bromide or chloride iron(II) bromide or iodide cobalt(II) chloride silver fluoride all four mercury(II) halides copper(I) chloride, bromide or iodide copper(II) chloride and bromide ammonium tetrachlorocuprate zinc and cadmium chlorides, bromides, and iodides aluminum fluoride, chloride, and bromide thallium bromide tin(II) or (IV) chloride tin(IV) iodide arsenic trichloride and triiodide antimony and bismuth trichlorides, tribromides, and triiodides vanadium(V) chloride chromium(IV) chloride manganese(II) and iron(II) chlorides and nickel chloride, bromide, and iodide.17,22"25... [Pg.485]

Vanadium Tetrabromide. VBr4 has been isolated by quenching (-78 °C) the vapor obtained from heating the solid tribromide to 325 °C. Although it is stable only up to -45 °C, decomposing to VBr3 and Br2, its absorption spectrum in the range 200 - 600 nm has been obtained. ... [Pg.5025]

Vanadium trichloride or tribromide reacts with thioethers giving [VX3L2] (X = Cl or Br L = SMe2, tetrahydrothiophene or The complex with di-/i-propyl sulfide could not... [Pg.2320]

Ferric chloride hexahydrate Iron pentacarbonyl Palladium diacetate Phosphotungstic acid Vanadium pentoxide catalyst, organic synthesis Boron tribromide Boron trichloride Boron trifluoride Cobalt Mercury acetate (ic) Trimethylsilyl trifluoromethane sulfonate Zinc acetate... [Pg.4942]

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