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Bis(cyclopentadienyl)zirconium dichloride

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Bis(cyclopentadienyl)zirconium dichloride Basic information
Bis(cyclopentadienyl)zirconium dichloride Chemical Properties
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38-34
  • Safety Statements 26-36-45-36/37/39
  • RIDADR UN3261
  • WGK Germany 3
  • RTECS ZH7525000
  • 8-10-21
  • TSCA Yes
  • HazardClass 8
  • PackingGroup II
  • HS Code 29319090
MSDS
Bis(cyclopentadienyl)zirconium dichloride Usage And Synthesis
  • Reaction
    1. Reagent for the conversion of enynes to bicyclic cyclopentenones.
    2. Precursor for the cyclization of dienes to cyclopentane and cyclohexane derivatives.
    3. Precatalyst for the alkylation of olefins.
    4. Precursor to zirconocene complexes of unsaturated organic molecules.
    5. Catalyst for the coupling of alkoxymethyl-substituted styrene derivatives.
    6. Reagent for the carboalumination-Claisen rearrangement-carbonyl addition cascade reaction.
    7. Useful for the preparation of vinyl allenes.
    8. Reagent for the alkynylation of epoxides.
    9. Catalyst for the formation of carbocycles from cyclic enol ether. 


  • Chemical PropertiesWhite crystals. Soluble in polar organic solvents. Stable in dry air, very slowly hydrolyzes in moist air.
  • UsesRubber accelerator, component of a catalyst system for polymerization of vinyl monomers, curing agent for water-repellent silicone materials, agent for plating with zirconium.
  • Air & Water ReactionsBis(cyclopentadienyl)zirconium dichloride is extremely unstable when exposed to air. Decomposes in water .
  • Reactivity ProfileBis(cyclopentadienyl)zirconium dichloride is incompatible with water, acids, bases, alcohols and halogens.
  • HazardToxic by inhalation and skin contact, irritant to eyes and mucous membranes.
  • Fire HazardFlash point data for Bis(cyclopentadienyl)zirconium dichloride are not available, but Bis(cyclopentadienyl)zirconium dichloride is probably combustible.
  • Safety ProfilePoison by intraperitoneal route. Mutation data reported. When heated to decomposition it emits toxic fumes of Zr and Cl-.
  • Purification MethodsRecrystallise the dichloride from CHCl3 or xylene and dry it in a vacuum. 1H NMR (CDCl3) : 6.52 from Me4Si. Store it dry in the dark under N2. [Reid et al. Aust J Chem 18 173 1965, Beilstein 16 IV 1770.]
Bis(cyclopentadienyl)zirconium dichloride(1291-32-3)Related Product Information
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