Description

(4,4,8,8-Tetramethyl-1,4,5,8-Tetrahydro- 4,8-Disilaindacene-1,5-Diyl)Zirconium Dichloride, 99% is a high-purity organometallic compound, specifically a zirconocene derivative, that serves as a highly active and selective catalyst precursor in advanced polymerization processes. Its value lies in enabling the synthesis of polymers with precisely controlled molecular architectures, including stereoregular polyolefins and specialty copolymers. This material is essential for R&D chemists and process engineers in the petrochemical, polymer, and advanced materials sectors who require robust and tunable catalytic systems.

Application

• Catalyst for Olefin Polymerization: A key component in Ziegler-Natta and metallocene catalyst systems for the production of polyethylene (PE) and polypropylene (PP).
• Stereospecific Polymer Synthesis: Enables the production of isotactic or syndiotactic polyolefins with high tacticity control.
• Advanced Material Research: Used in the development of novel polymeric materials, including elastomers and engineering plastics with tailored properties.
• Co-catalyst Activation: Functions as a precursor that, when activated with methylaluminoxane (MAO) or other co-catalysts, forms the active catalytic species.
• Organic Synthesis & C-C Bond Formation: Employed as a reagent or catalyst in specialized organic transformations and cross-coupling reactions in fine chemical synthesis.
• Academic & Industrial R&D: A critical reagent for investigating new catalytic cycles and polymerization mechanisms in university and corporate laboratories.

Basic Information

Product Name	(4,4,8,8-Tetramethyl-1,4,5,8-Tetrahydro- 4,8-Disilaindacene-1,5-Diyl)Zirconium Dichloride, 99%
CAS No.	154675-56-6
Molecular Formula	C14H20Cl2Si2Zr
Molecular Weight	410.70 g/mol
Synonyms	Dimethylsilylene-bis(tetramethylcyclopentadienyl)zirconium dichloride; rac-Dimethylsilylenebis(2,3,4,5-tetramethyl-1-cyclopentadienyl)zirconium dichloride; rac-(CH3)2Si(2,3,4,5-Me4C5)2ZrCl2; rac-Me2Si(2,3,4,5-Me4C5)2ZrCl2; rac-C2-Symmetric zirconocene dichloride; Metallocene catalyst (C2-symmetry); Zirconocene derivative
EINECS	Contact for details

Quality Control

Our 99% grade of (4,4,8,8-Tetramethyl-1,4,5,8-Tetrahydro- 4,8-Disilaindacene-1,5-Diyl)Zirconium Dichloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high catalytic performance. Each lot is analyzed to confirm identity, purity, and the absence of deleterious impurities. A comprehensive Certificate of Analysis (COA) detailing specifications and test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (argon or nitrogen) to prevent decomposition. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Assay (Zirconium content)	≥ 99.0%
Purity (HPLC)	≥ 99.0%
Solubility	Soluble in toluene, dichloromethane

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.