BIS(PENTAMETHYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE

Base Information

• Chemical Name: BIS(PENTAMETHYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE
• CAS No.: 85959-83-7
• Molecular Formula: C20H30Cl2Hf
• Molecular Weight: 519.854
• Hs Code.: 29319090
• Mol file: 85959-83-7.mol

Synonyms:Bis(pentamethylcyclopentadienyl)hafniumdichloride;Decamethylhafnocene dichloride;Dichlorobis(h5-pentamethylcyclopentadienyl)hafnium;

Chemical Property of BIS(PENTAMETHYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE

Chemical Property:

• Appearance/Colour: light yellow to yellow-beige crystals
• Melting Point: >300 °C(lit.)
• PSA: 0.00000
• Density: >300
• LogP: 7.32300
• Sensitive.: moisture sensitive

Purity/Quality:

98%,99%, ^*data from raw suppliers

Bis(pentamethylcyclopentadienyl)hafnium dichloride, min. 98% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn
• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of BIS(PENTAMETHYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE

There total 7 articles about BIS(PENTAMETHYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 76.0%

pentamethylcyclopentadienyllithium (51905-34-1) + hafnium tetrachloride (13499-05-3) → bis(1,2,3,4,5-pentamethylcyclopentadienyl)hafnium dichloride (85959-83-7)

Guidance literature:

In xylene; educts refluxed in xylene under Ar for 3 days; evapd. in vac., suspended in CH2Cl2 and 4 M HCl, CH2Cl2 layer sepd., aq. layer washed with CH2Cl2, combined CH2Cl2 soln. dried over MgSO4, crystd. from CH2Cl2/petroleum ether;

Reference yield: 70.5%

n-butyllithium (109-72-8,29786-93-4) + 1,2,3,4,5-pentamethylcyclopentadiene (4045-44-7) + hafnium tetrachloride (13499-05-3) → bis(1,2,3,4,5-pentamethylcyclopentadienyl)hafnium dichloride (85959-83-7)

Guidance literature:

In xylene; (Ar);; solvent removed under vac.; extd. in Soxhlet with CCl4, elem. anal.;

DOI:10.1021/om00120a017

Reference yield:

Cp'2Hf(OC6F5)2 (116437-03-7) → bis(1,2,3,4,5-pentamethylcyclopentadienyl)hafnium dichloride (85959-83-7) + 2,3,4,5,6-pentafluorophenol (771-61-9)

Guidance literature:

With HCl; In toluene; titrn. calorimetric expt., titrn. of a soln. of Cp'2Hf(OC6F5)2 in toluene into a soln. of HCl in toluene; products not isolated, react. was monitored in prior expts. by NMR;

DOI:10.1021/ja00231a020

upstream raw materials:

n-butyllithium

1,2,3,4,5-pentamethylcyclopentadiene

hafnium tetrachloride

pentamethylcyclopentadienyllithium

Downstream raw materials:

((CH₃)5C₅)2Hf(CCC₆H₄CH₃)2

(η(5)-C5Me5)2Hf(SC6H5)2

(η(5)-C5Me5)2Hf(SC6H4OMe-p)2

(η5-C5Me5)2Hf(CH2C6H4-m-NMe2)2

Refernces

• 1、 Beweries, Torsten,Burlakov, Vladimir V.,Bach, Marc A.,Arndt, Perdita,Baumann, Wolfgang,Spannenberg, Anke,Rosenthal, Uwe. "Complexation of bis(trimethylsilyl)acetylene by decamethylhafnocene to give the hafnacyclopropene Cp*2Hf(η2-Me 3SiC2SiMe3): An unusually strong metal-alkyne interaction". . p. 247 - 249. Retrieved 2008/10/09.