Bis(cyclopentadienyl)dimethylzirconium(IV)
Bis(cyclopentadienyl)dimethylzirconium(IV) (CAS 12636-72-5), also known as dimethylzirconocene, is an organometallic zirconium(IV) complex with the formula (C5H5)2Zr(CH3)2 and a molar mass of 251.48 g/mol. It is an air- and moisture-sensitive metallocene supplied as a research-grade reagent of about 97% assay. It is used principally as a catalyst and precatalyst in olefin polymerisation and in a range of organic transformations. Tech Serve Solutions supplies and exports it worldwide.
- IUPAC
- Dimethyldicyclopentadienylzirconium,Dimethylzirconocene
- Synonyms
- Bis(cyclopentadienyl)dimethylzirconium(IV)DimethylzirconoceneDimethyldicyclopentadienylzirconiumBis(cyclopentadienyl)dimethylzirconiumZirconocene dimethyl(C5H5)2Zr(CH3)2CAS 12636-72-5
Olefin polymerisation catalyst
Serves as a metallocene catalyst for Ziegler-Natta polymerisations of alkenes. It is widely studied in the development of single-site catalyst systems for polyolefins.
Cationic ring-opening polymerisation
Acts as a catalyst for cationic ring-opening polymerisation reactions, supporting the controlled synthesis of polymeric materials.
Hydrothiolation of terminal alkynes
Catalyses the Markovnikov-selective intermolecular hydrothiolation of terminal alkynes, providing access to vinyl sulfide products with defined regioselectivity.
Methylalumination of arylethynes
Functions as a catalyst in the methylalumination of heterosubstituted arylethynes, a useful carbometalation step in organic synthesis.
Hydroamination precatalyst
Used as a precatalyst for the intramolecular hydroamination and cyclisation of aminoallenes, enabling the formation of nitrogen-containing ring systems.
| Molecular weight | 251.48 |
|---|---|
| Linear formula | (C5H5)2Zr(CH3)2 |
| Assay | 97% |
| Application | Catalyst for:• Cationic ring-opening polymerization reactions1• Markovnikov-selective intermolecular hydrothiolation of terminal alkynes2• Ziegler-Natta polymerizations of alkenes3• Methylalumination of heterosubstituted arylethynes4• Precatalyst for intramolecular hydroamination/cyclisation of aminoallenes5 |
| Melting point | 170 °C (dec.)(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Bis(cyclopentadienyl)dimethylzirconium(IV) used for?
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It is used mainly as a catalyst and precatalyst. Documented applications include Ziegler-Natta polymerisation of alkenes, cationic ring-opening polymerisation, Markovnikov-selective hydrothiolation of terminal alkynes, methylalumination of heterosubstituted arylethynes, and intramolecular hydroamination/cyclisation of aminoallenes.
What is the CAS number and molecular formula of Bis(cyclopentadienyl)dimethylzirconium(IV)?
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Its CAS number is 12636-72-5 and its linear formula is (C5H5)2Zr(CH3)2, with a molecular weight of 251.48 g/mol. The MDL number is MFCD01073786 and the PubChem substance ID is 24871906.
What grade and purity does Tech Serve Solutions supply?
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We supply it as a research-grade reagent with a typical assay of approximately 97%. It is offered for research, analytical and industrial use; we do not represent it as USP, BP or EP pharmacopoeial grade. A certificate of analysis can be provided with each consignment on request.
What are the safety and handling requirements?
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It is an air- and moisture-sensitive organometallic and should be stored and handled under an inert atmosphere away from moisture. It is classified as Water Hazard Class WGK 3 (severely hazardous to water), so it must be kept out of drains and waterways. Use eye shields, gloves and an N95 (US) or P1 (EN 143) respirator filter, and consult the current Safety Data Sheet before use.
How is Bis(cyclopentadienyl)dimethylzirconium(IV) packed, shipped and exported?
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Because the material is moisture- and air-sensitive, it is packed in tightly sealed, inert containers, often under inert gas, with packaging sized to the order. Tech Serve Solutions ships and exports worldwide with full documentation and a Safety Data Sheet, in line with applicable transport regulations.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required quantity, purity and delivery destination, and our team will respond with availability, lead time and a quotation. Sample requests for qualification can be accommodated where available.
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