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12129-72-5

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Basic Information
CAS No.: 12129-72-5
Name: benzene,cyclohexane,vanadium
Article Data: 26
Molecular Structure:
Molecular Structure of 12129-72-5 (benzene,cyclohexane,vanadium)
Formula: C12H12 V
Molecular Weight: 207.169
Synonyms: Vanadium,bis(benzene)- (6CI,7CI,8CI); Benzene, vanadium complex; Bis(benzene)vanadium;Bis(h6-benzene)vanadium;Dibenzenevanadium
Boiling Point: 78.8 °C at 760 mmHg
PSA: 0.00000
LogP: 2.91240
Synthetic route
117619-06-4

potassium{bis(η6-benzene)vanadium(-1)}

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With carbon monoxide In tetrahydrofuran reaction time: 15 minutes; product in mother liquor; by-product is THF-insoluble; highly pyrophoric brownish powder;95%
With carbon dioxide In tetrahydrofuran byproducts: potassium hydrogencarbonate, potassium formiate, potassium oxalate; room temperature; atmospheric pressure, CO2 reacted instantly; filtration; precipitate dried in vacuo (by-products); vacuum evaporation of mother liquor;95%
With carbon dioxide In tetrahydrofuran byproducts: potassium hydrogencarbonate, potassium oxalate, potassium carbonate; sealed ampoule; THF solution saturated with CO2; composition of by-products is substantially different;

potassium{bis(η6-benzene)vanadium(-1)}*1.25tetrahydrofuran

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With carbon dioxide In tetrahydrofuran reaction of V-complex with CO2-saturated THF in a stream of CO2; filtn., washing the THF-insoluble product with THF, drying in vacuo, evapn. of mother liquor yields V-compd.;83%
7718-98-1

vanadium(III) chloride

7429-90-5

aluminium

A

12129-72-5

bis(η(6)-benzene)vanadium

B

{V2(μ-Cl)3(THF)6}{AlCl4}

Conditions
ConditionsYield
With AlCl3; THF; benzene In tetrahydrofuran; benzene a mixt. of VCl3, Al and AlCl3 in benzene is refluxed for 15 h under Ar, filtration, slow addn. of the lower layer to THF at room temp. during 2 h, the soln. is stirred 15 h at room temp.; cooled to -30°C overnight, filtration, washed (THF), briefly dried (vac.), the V(0)-compd. is isolated from the concd. soln. at -78°C;A 60%
B 75%
7718-98-1

vanadium(III) chloride

71-43-2

benzene

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With aluminium trichloride; sodium dithionite; aluminium In benzene mixt. of VCl3, Al powder, AlCl3, and C6H6 is boiled, dild. with C6H6, and slowly poured in a well cooled 30% KOH soln. containing Na2S2O4; recryst. from diethyl ether;27%
With AlCl3; Al; Na2S2O4 In benzene mixt. of VCl3, Al powder, AlCl3, and C6H6 is boiled, dild. with C6H6, and slowly poured in a well cooled 30% KOH soln. containing Na2S2O4; recryst. from diethyl ether;27%
With aluminium trichloride; sodium dithionite; aluminium In benzene C6H6-VCl3-AlCl3-Al mixt. heated in a sealed tube at 150°C; hydrolysis with aq. KOH soln. containing Na2S2O4;
With aluminium trichloride; sodium dithionite; aluminium In benzene C6H6-VCl3-AlCl3-Al mixt. heated in a sealed tube at 150°C; hydrolysis with aq. KOH soln. containing Na2S2O4;
109-99-9

tetrahydrofuran

dysprosium(II) iodide

vanadocene

71-43-2

benzene

A

698392-40-4

(C5H5)DyI2(THF)3

B

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
In benzene Schlenk techniques; V compd. (1.1 mmol) in benzene mixed with iodide (4.54 mmol), stirred at 80°C for 10 h; filtered, solvent evapd., extd. (hexane), evapd., sublimed (100-110°C, 0.1 Torr); residue after extn. recrystd. (THF);A 5%
B 24%

vanadocene

71-43-2

benzene

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With dysprosium(II) iodide In benzene under conditions precluding exposure to atm.; soln. of vanadocene in benzene added to powder DyI2 at about 20°C; mixt. heated with stirring to 85°C for 10 h; soln. sepd. from ppt.; benzene removed (vac.); residue extd. (hexane); solvent removed at room temp.; residue heated in vac. by gradually raising the temp. to 110°C; mixt. of crystals sepd. by repeated sublimation (vanadocene sublimed at 50-60...;15%
109-99-9

tetrahydrofuran

neodymium(II) diiodide

vanadocene

71-43-2

benzene

A

698392-39-1

(C5H5)NdI2(THF)3

B

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
In benzene Schlenk techniques; V compd. (1.93 mmol) in benzene mixed with iodide (8.69 mmol), stirred at 80°C for 10 h; filtered, solvent evapd., extd. (hexane), evapd., sublimed (100-110°C, 0.1 Torr); residue after extn. recrystd. (THF);A n/a
B 10%

4Li(1+)*V(C6H5)6(4-)*3.5(C2H5)2O=Li4V(C6H5)6*3.5(C2H5)2O

A

12185-35-2

(C6H5C6H5)2V

B

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With MgCl2 evapn. to dryness; sublimation at (1E-3)-(1E-4) torr, 90-120°C; recrystn. from hexane;

4Li(1+)*V(2+)*6C6H5(1-)*3.5(C2H5)2O=Li4V(C6H5)6*3.5(C2H5)2O

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With MgCl2 In diethyl ether treatment with anhydrous MgCl2 in ether, followed by hydrolysis;
With MgCl2 In diethyl ether treatment with anhydrous MgCl2 in ether, followed by hydrolysis;
7440-62-2

vanadium

A

61332-91-0

monobenzene vanadium

B

12129-72-5

bis(η(6)-benzene)vanadium

Conditions
ConditionsYield
With C6H6 In solid matrix V atoms deposited with benzene matrix at 12 K; not isolated, detected by UV, ESR;
With C6H6 In solid matrix V atoms deposited with benzene/Ar matrix at 12 K; not isolated, detected by UV, ESR;
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7440-62-2
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    CAS: [12129-72-5] Molecular Weight: 207.16 Color and Form: black crystals Solubility in Water: Insoluble

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