Bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate
Bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate (CAS 99326-34-8), commonly known as [Rh(cod)2]OTf, is a cationic organorhodium(I) complex with the empirical formula C17H24F3O3RhS and a molecular weight of 468.34 g/mol. Two 1,5-cyclooctadiene ligands and a weakly coordinating triflate counterion make it a versatile, readily ligand-exchanged precatalyst widely used in homogeneous catalysis, including asymmetric hydrogenation and cross-coupling chemistry. Tech Serve Solutions supplies it at 98% assay.
- IUPAC
- Bis(1,5-cyclooctadiene)rhodium(I) triflate
- Synonyms
- Bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonateBis(1,5-cyclooctadiene)rhodium(I) triflate[Rh(cod)2]OTfBis(cycloocta-1,5-diene)rhodium(I) trifluoromethanesulfonateRhodium(I) bis(1,5-cyclooctadiene) triflateCAS 99326-34-8
Cationic precatalyst for homogeneous catalysis
The weakly coordinating triflate anion and labile cyclooctadiene ligands make this a convenient cationic rhodium(I) source. Combined with phosphine or other donor ligands in situ, it generates active catalysts for a range of homogeneous transformations.
Asymmetric hydrogenation
Used with chiral bisphosphine ligands to assemble cationic rhodium catalysts for enantioselective hydrogenation of prochiral alkenes, enamides and related substrates. It is marketed within the Umicore precatalyst range for asymmetric catalysis.
Cross-coupling and C–C bond formation
Serves as a rhodium precursor in cross-coupling and related carbon–carbon bond-forming reactions. The 1,5-cyclooctadiene ligands are readily displaced to expose reactive coordination sites for catalysis.
Research and method development
Employed in academic and industrial laboratories as a defined, single-source rhodium(I) precatalyst for screening ligands and developing new catalytic methodology in organic synthesis.
| Molecular weight | 468.34 |
|---|---|
| Empirical formula | C17H24F3O3RhS |
| Assay | 98% |
| Application | Umicore Precatalysts for Asymmetric and Cross-Coupling Catalysis |
| Melting point | 159 °C (dec. literature value)(lit.) |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate used for?
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It is used as a cationic rhodium(I) precatalyst in homogeneous catalysis. Paired with chiral or achiral donor ligands, it forms active catalysts for asymmetric hydrogenation, cross-coupling and other carbon–carbon bond-forming reactions in organic synthesis and process research.
What is the CAS number and molecular formula of Bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate?
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Its CAS number is 99326-34-8 and its empirical formula is C17H24F3O3RhS (Hill notation), corresponding to a molecular weight of 468.34 g/mol. The MDL number is MFCD00143752. It is also known as [Rh(cod)2]OTf or bis(1,5-cyclooctadiene)rhodium(I) triflate.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this material at 98% assay as a research and laboratory reagent grade product for synthesis and catalysis. 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 precautions?
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It is classified under GHS07 with the signal word Warning. The hazard statements are H315 (causes skin irritation), H319 (causes serious eye irritation) and H335 (may cause respiratory irritation). Handle with gloves and eye protection and avoid dust formation; use an N95-type dust mask and adequate ventilation (P261, P305+P351+P338). It carries German water hazard class WGK 3. Always consult the Safety Data Sheet before use.
Is Bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate a controlled substance?
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No. Based on the supplied data, this compound is not a scheduled or drug-controlled substance. It is a standard organometallic reagent supplied for laboratory and industrial synthesis, subject to normal chemical handling and transport requirements.
How is it packed, shipped and exported?
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The product is supplied in suitable sealed containers with appropriate inner protection, GHS-compliant labelling and accompanying documentation. Export packing and pack sizes are arranged to suit your order and destination. As a specialist exporter since 1998, Tech Serve Solutions handles international shipping with full regulatory paperwork.
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. Samples can be discussed for qualified evaluation and commercial enquiries.
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