1291-32-3 Bis(cyclopentadienyl)zirconium dichloride 1291-32-3

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1 Kilogram	Negotiable

1 Kilogram

Negotiable

Min.Order :1 Kilogram
Purity: 98%
Payment Terms : L/C,D/A,D/P,T/T,,MoneyGram

Keywords

1291-32-3 Bis(cyclopentadienyl)zirconium dichloride high quality Bis(cyclopentadienyl)zirconium dichloride Bis(cyclopentadienyl)zirconium dichloride manufacturer

Quick Details

Appearance: white or off-white crystalline powder
Application:1291-32-3
PackAge:bottle/drum or customer's request
ProductionCapacity:1|Metric Ton|Month
Storage:N/A
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Superiority:

1291-32-3 Bis(cyclopentadienyl)zirconium dichloride 1291-32-3

English synonyms:

Bis(cycL; zirconocene; opentadienyL;) zirconiumdichL; Dichlorozirconocene; Zirconcenedichloride; dichChemicalbooklorozirconium(2+); ZIRCONOCENEDICHLORIDE; ZIRCONOCENEDICHLORIDE,98+%; DICHLORODICYCLOPENTADIENYLZIRCONIUM

Melting point: 242-245 ° C (lit.)

Boiling point: 124-125 ° C / 15 mm

Flash: 124-125 ° C / 15 mm

Storage conditions :Refrigerator(+4°C)

Appearance: Powder

Color: whitetooff - white

The water solubility, hydrolysis

Sensitivity: Air&MoistureSensitive

CAS Database :1291-32-3(CASDataBaseReference)

NIST chemical information :Bis(Cyclopentadienyl) Zirconiumdichloride (1291-32-3)

EPA Chemical Information: Zirconenedichloride (1291-32-3)

Details:

Introduction to the

Zirconium dichloroethene is the main catalyst of Kaminsky type catalytic system. This kind of catalyst has high activity and isometric of olefin oligomerization, and catalytic olefin oligomerization has also been reported in literature. Zirconium dichloroethene is also the main component of Negishi's reagent, which can be used for the cyclogenesis of intramolecular dienes and the cyclogenesis of intermolecular alkynes and olefin.

application

Cp2ZrCl2 can be used to catalyze hydrogenation of unsaturated polymers and in laboratory research and development as well as in chemical and pharmaceutical research and development.

The preparation of

Step 1:

Preparation of cyclopentadienyl sodium Dipolycyclopentadiene was pyrolysis at 180℃ under the protection of pure nitrogen. The cyclopentadiene monomers were collected at 40 ~ 42℃ and stored in an ice-salt bath. A stirring magneton was placed in a 500mL three-mouth bottle, and a constant pressure drop funnel and reflux-condenser were installed. Then, it was evacuated and replaced with pure nitrogen for 3 times. 4.6g(0.2mol) sodium wire and 40mLTHF were added under pure nitrogen protection. Add 25mL(0.3mol) of fresh cyclopentadiene into a constant pressure drop funnel containing 100mLTHF, start an electromagnetic stirrer, and drop the above cyclopentadiene solution into a three-mouth bottle within 20min. After finishing the drop, continue the reaction for 1.5h, the sodium filament basically disappears, and obtain the cyclopentadienyl sodium THF solution. Cyclopentadienyl sodium solution under normal conditions is pale yellow, if there is no pure nitrogen protection will be oxidized to purple.

Step 2:

Preparation of zirconium dichloroethene a stirring magneton was placed in a 500mL three-mouth bottle, constant pressure drop funnel and reflux-condenser were installed, pumped out, and replaced for 3 times with pure nitrogen. 50mL toluene and 22.3g(0.1mol)ZrCl4 were added into the flask and stirred to make a suspension. The THF solution of cyclopentadienyl sodium was added to the drip funnel at constant pressure and dropped at room temperature to keep the reaction solution boiling slightly. After the dripping was completed, the reaction continued for 2h. Under the heating of 50℃ oil bath, the solvent was decompressed and dried to obtain yellow solid. The solids are put into a cable extractor and extracted with CHCl3. Most of the solvents in the extract were steamed under decompression, and the solids were separated out after cooling and filtered. The product was washed with a small amount of CHCl3 and dried in vacuum, and the white crystal was 20.2g with a yield of 69%.

use

Used in olefin polymerization catalysts, as raw materials for the preparation of zirconium, and in organic synthesis for the synthesis of many early transition metal complexes and organic metal compounds

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