Description

Rac-Bis-Indenyl-Dimethylsilyl-Hafniumdimethyl (CAS NO 220492-55-7) is a highly specialized organometallic compound belonging to the class of ansa-metallocene catalysts. This compound is a critical precursor for the development of advanced single-site catalysts used in the synthesis of polyolefins with precisely controlled microstructures. It is essential for researchers and manufacturers in the polymer industry who require catalysts for producing specialty polymers with tailored properties such as high stereoregularity, specific molecular weight distributions, and enhanced material performance.

Application

• Polyolefin Catalyst Precursor: A key component in the synthesis of single-site catalysts for the polymerization of ethylene and propylene.
• Advanced Polymer Research: Enables the development of novel polyolefin materials with controlled tacticity and comonomer incorporation in R&D laboratories.
• Specialty Plastics Production: Used to manufacture high-performance plastics for automotive, packaging, and specialty film applications.
• Catalyst Ligand Synthesis: Serves as a sophisticated ligand framework for constructing new hafnium-based catalytic systems.
• Material Science Studies: Employed in academic and industrial research to study structure-activity relationships in metallocene catalysis.

Basic Information

Product Name	Rac-Bis-Indenyl-Dimethylsilyl-Hafniumdimethyl
CAS No.	220492-55-7
Molecular Formula	C22H26HfSi
Molecular Weight	489.16 g/mol
Synonyms	Dimethylsilylene-bis(indenyl)hafnium dimethyl; rac-Dimethylsilanediylbis(inden-1-yl)dimethylhafnium; Hafnium, dimethyl[(1,2,3,3a,7a-η)-1H-inden-1-yl]dimethylsilyl[(1,2,3,3a,8a-η)-1H-inden-1-yl]-; rac-(Dimethylsilylene)bis(indenyl)hafnium dimethyl; rac-Me2Si(Ind)2HfMe2; Ansa-Hafnocene dimethyl; Catalyst Hf-01 (trade name variant); Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our production of Rac-Bis-Indenyl-Dimethylsilyl-Hafniumdimethyl adheres to stringent quality protocols to ensure batch-to-batch consistency and high catalytic activity. Each lot undergoes comprehensive analysis, including NMR spectroscopy and elemental analysis, to verify identity and purity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and R&D documentation requirements.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly sensitive nature, this material must be stored under a dry, inert atmosphere (argon or nitrogen) at temperatures between 2°C and 8°C to maintain stability and prevent decomposition. The container should be kept in a cool, dry, and well-ventilated area, away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to beige crystalline solid
Identification (NMR)	Conforms to structure
Purity (by 1H NMR)	≥ 95.0%
Solubility	Soluble in toluene, benzene, ether

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