Bis(cyclopentadienyl)titanium(IV) dichloride
Bis(cyclopentadienyl)titanium(IV) dichloride (CAS 1271-19-8), commonly known as titanocene dichloride or Cp2TiCl2, is an organometallic titanium(IV) complex with the formula C10H10Cl2Ti and a molar mass of 248.96 g/mol. It is a bright crystalline solid widely used as a metallocene reagent and catalyst precursor in organic and organometallic synthesis. Tech Serve Solutions supplies it at 97% assay for research and chemical-synthesis applications worldwide.
- IUPAC
- Cp2TiCl2,Cp2TiCl2,Di(cyclopentadienyl)titanium(IV) dichloride,Dichlorobis(1,3-cyclopentadiene)titanium,Dichlorodicyclopentadienyltitanium,Dichlorotitanocene,Titanocene dichloride
- Synonyms
- Titanocene dichlorideCp2TiCl2Di(cyclopentadienyl)titanium(IV) dichlorideDichlorobis(cyclopentadienyl)titaniumDichlorobis(1,3-cyclopentadiene)titaniumDichlorodicyclopentadienyltitaniumDichlorotitanoceneBis(cyclopentadienyl)titanium dichloride

Reagent in organic synthesis
Titanocene dichloride serves as a versatile titanium(IV) reagent in chemical synthesis. A documented use is the one-pot preparation of α-methylene-γ-butyrolactones from benzaldehydes and bromomethylacrylates.
Catalyst and catalyst precursor
As a well-established metallocene, Cp2TiCl2 is used as a catalyst and as a precursor to lower-valent titanium species in catalysis and inorganic chemistry.
Source of titanocene chemistry
The complex is a common starting point for accessing other cyclopentadienyl-titanium reagents and titanium(III) intermediates used in radical and reductive transformations.
Research and academic use
It is employed as a reference organometallic compound in laboratory study of metallocene structure, bonding and reactivity.
| Molecular weight | 248.96 |
|---|---|
| Empirical formula | C10H10Cl2Ti |
| Assay | 97% |
| Density | 1.6 g/mL at 25 °C(lit.) |
| Application | One-pot synthesis of α-methylene-γ-butyrolactones from benzaldehydes and bromomethylacrylates.1 |
| Melting point | 260-280 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 37/38 |
| Safety statements (S) | 36 |
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)titanium(IV) dichloride used for?
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It is used as a titanium(IV) metallocene reagent and catalyst precursor in organic and organometallic synthesis. A documented application is the one-pot synthesis of α-methylene-γ-butyrolactones from benzaldehydes and bromomethylacrylates. It is also a common entry point to other cyclopentadienyl-titanium and titanium(III) species.
What is the CAS number and molecular formula of Bis(cyclopentadienyl)titanium(IV) dichloride?
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The CAS number is 1271-19-8 and the molecular formula is C10H10Cl2Ti (Hill notation), with a molecular weight of 248.96 g/mol. Its EC number is 215-035-9 and MDL number MFCD00003723.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bis(cyclopentadienyl)titanium(IV) dichloride at 97% assay as a technical/research-grade reagent. We do not represent it as USP, BP or EP pharmacopoeia grade. A certificate of analysis can be provided with each consignment.
What are the safety and handling requirements?
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The product carries GHS pictogram GHS07 and the signal word Warning. The hazard statements are H315 (causes skin irritation) and H335 (may cause respiratory irritation). Keep it away from dust formation (P261) and handle with a type N95 dust mask, eye shields and gloves. It is classified WGK 3 (Germany), indicating it is hazardous to water.
How is Bis(cyclopentadienyl)titanium(IV) dichloride packed, shipped and exported?
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It is packed as a solid in tightly sealed, suitably labelled containers with sizes selected to match laboratory or bulk requirements. Tech Serve Solutions exports globally with full documentation, including a certificate of analysis and safety data sheet, in line with applicable transport and customs regulations.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required quantity, packing preference and destination, and our team will respond with availability, lead time and a formal quotation. Samples can be arranged for qualified buyers on request.
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