Bis(isopropylcyclopentadienyl)hafnium dichloride

Base Information

• Chemical Name: Bis(isopropylcyclopentadienyl)hafnium dichloride
• CAS No.: 66349-80-2
• Molecular Formula: C₁₆H₂₂Cl₂Hf
• Molecular Weight: 463.747
• Hs Code.: 29310099
• Mol file: 66349-80-2.mol

Synonyms:BIS(ISOPROPYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE;BIS(I-PROPYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE;Bis(i-propylcyclopentadienyl)hafniumdichloride,min.98%;Bis(isopropylcyclopentadienyl)hafnium(IV) dichloride;Bis(i-propylcyclopentadienyl)hafnium dichloride, min. 98%;Bis(i-propylcyclopentadienyl)hafnium dichloride, 98+%

Chemical Property of Bis(isopropylcyclopentadienyl)hafnium dichloride

Chemical Property:

• Melting Point: 126-128oC
• PSA: 0.00000
• LogP: 5.47440
• Sensitive.: moisture sensitive

Purity/Quality:

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

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

Safty Information:

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 37/39-26

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

Technology Process of Bis(isopropylcyclopentadienyl)hafnium dichloride

There total 3 articles about Bis(isopropylcyclopentadienyl)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: 80.0%

C8H11Li + hafnium tetrachloride (13499-05-3) → bis(3-isopropylcyclopentadienyl)hafnium dichloride (66349-80-2)

Guidance literature:

In diethyl ether; at -30 - 20 ℃; for 17h; Inert atmosphere;

Reference yield: 73.0%

6,6'-dimethyl fulvene (2175-91-9) + di-n-butylhafnium dichloride → bis(3-isopropylcyclopentadienyl)hafnium dichloride (66349-80-2)

Guidance literature:

In toluene; under Ar, 2 equiv. of fulvene-compd., room temp. for 1 h, 65-70 °C for 4 h; evapn., Soxhlet extn. with hexane;

DOI:10.1016/j.poly.2005.03.020

Reference yield: 72.0%

hafnium tetrachloride (13499-05-3) + i-propylcyclopentadienyl lithium → bis(3-isopropylcyclopentadienyl)hafnium dichloride (66349-80-2)

Guidance literature:

In tetrahydrofuran; addn. of HfCl4 at 0°C to freshly prepared C5H4C3H7Li in THF withstirring over 0.5 h, mixture stirred for further 24 h at 20°C; THF removed under vac., residue extd. with boiling toluene and little activated charcoal, filtered, addn. of hexane to filtrate, cooling to -30°C, elem. anal.;

DOI:10.1039/DT9810000805

upstream raw materials:

6,6'-dimethyl fulvene

hafnium tetrachloride

Refernces

• 1、 Eisch, John J.,Owuor, Fredrick A.,Shi, Xian. "New syntheses of ansa-metallocenes or unbridged substituted metallocenes by the respective reductive dimerization of fulvenes with Group 4 metal divalent halides or with Group 4 metal dichloride dihydrides". . p. 1325 - 1339. Retrieved 2008/10/09.