Date published: 2026-5-1

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Bis(cyclopentadienyl)dimethylzirconium(IV) (CAS 12636-72-5)

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Alternate Names:
Dimethyldicyclopentadienylzirconium; Dimethylzirconocene
CAS Number:
12636-72-5
Molecular Weight:
251.48
Molecular Formula:
C12H16Zr
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Bis(cyclopentadienyl)dimethylzirconium(IV), known as Cp2ZrMe2, is a significant organometallic compound featuring two cyclopentadienyl rings, two methyl groups, and a central zirconium atom. Bis(cyclopentadienyl)dimethylzirconium(IV) finds diverse applications in scientific research, particularly as a catalyst for a wide range of reactions, including hydrosilylation, hydrometalation, and hydrozirconation. Additionally, it plays a significant role in the synthesis of other organometallic compounds such as bis(cyclopentadienyl)zirconium dichloride (Cp2ZrCl2). The mechanism of action for Bis(cyclopentadienyl)dimethylzirconium(IV) involves the formation of a zirconocene-cyclopentadienyl complex. This intricate complex arises when the zirconocene and cyclopentadienyl anions react in the presence of tetrahydrofuran (THF). Consequently, the complex undergoes a ring-opening reaction, leading to the formation of Bis(cyclopentadienyl)dimethylzirconium(IV), Cp2ZrMe2.


Bis(cyclopentadienyl)dimethylzirconium(IV) (CAS 12636-72-5) References

  1. Absolute rate constants for some intermolecular reactions of alpha-aminoalkylperoxyl radicals. Comparison with alkylperoxyls.  |  Lalevée, J., et al. 2008. J Org Chem. 73: 6489-96. PMID: 18665644
  2. Statistical Copolymers of n-Butyl Vinyl Ether and 2-Chloroethyl Vinyl Ether via Metallocene-Mediated Cationic Polymerization. A Scaffold for the Synthesis of Graft Copolymers.  |  Zouganelis, S., et al. 2019. Polymers (Basel). 11: PMID: 31527533
  3. Polyolefin catalysis of propene, 1-butene and isobutene monitored using hyperpolarized NMR.  |  Kim, Y., et al. 2021. Chem Sci. 12: 2823-2828. PMID: 34164046

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Bis(cyclopentadienyl)dimethylzirconium(IV), 1 g

sc-227381
1 g
$133.00