Bis(1,5-cyclooctadiene)iridium(I) tetrafluoroborate
Bis(1,5-cyclooctadiene)iridium(I) tetrafluoroborate (CAS 35138-23-9; formula C16H24BF4Ir; molar mass 495.38 g/mol) is an air-sensitive cationic iridium(I) organometallic complex in which two 1,5-cyclooctadiene ligands coordinate an iridium centre balanced by a tetrafluoroborate anion. It is widely used as a homogeneous catalyst precursor in synthetic chemistry, where the labile diene ligands are readily displaced to generate active iridium species for hydrogenation, isomerisation and related transformations.
- Synonyms
- Bis(1,5-cyclooctadiene)iridium(I) tetrafluoroborateBis(cycloocta-1,5-diene)iridium(I) tetrafluoroborate(1,5-Cyclooctadiene)iridium(I) tetrafluoroborate dimer-derived cationIr(COD)2BF4[Ir(COD)2]BF4Bis(1,5-COD)iridium(I) tetrafluoroborateCAS 35138-23-9

Catalyst precursor for homogeneous catalysis
Serves as a convenient cationic iridium(I) source whose loosely bound cyclooctadiene ligands are displaced by phosphines, N-heterocyclic carbenes and other donors to assemble well-defined active catalysts in situ.
Hydrogenation of alkenes and functionalised substrates
Combined with suitable ligands, it forms cationic iridium catalysts used in the homogeneous hydrogenation of olefins, including more hindered and functionalised double bonds.
Isomerisation and C–H functionalisation chemistry
The complex is employed in iridium-catalysed double-bond isomerisation and as an entry point to systems studied for C–H activation and borylation in organic synthesis.
Organometallic and methodology research
A standard building block for preparing iridium(I) and iridium(III) complexes and for developing new catalytic methodology in academic and industrial laboratories.
| Molecular weight | 495.38 |
|---|---|
| Empirical formula | C16H24BF4Ir |
| Storage temperature | −20°C |
| Melting point | 32-48 °C |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Flash point | >149 °C / >300.2 °F |
| 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(1,5-cyclooctadiene)iridium(I) tetrafluoroborate used for?
+
It is used principally as a cationic iridium(I) catalyst precursor in homogeneous catalysis. Its labile 1,5-cyclooctadiene ligands are readily replaced by phosphines, carbenes or other donor ligands to form active iridium catalysts for hydrogenation, isomerisation and related C–H functionalisation chemistry.
What is the CAS number and molecular formula of Bis(1,5-cyclooctadiene)iridium(I) tetrafluoroborate?
+
Its CAS number is 35138-23-9 and its empirical formula is C16H24BF4Ir (Hill notation), with a molecular weight of 495.38 g/mol. The MDL number is MFCD00079664.
What grade and purity does Tech Serve Solutions supply?
+
We supply this iridium complex as a research and synthesis grade catalyst material. The supplied data does not specify an assay figure, so we do not state a fixed purity, and we do not represent it as USP, BP or EP grade. A current specification and certificate of analysis are provided with each batch on request.
How should Bis(1,5-cyclooctadiene)iridium(I) tetrafluoroborate be handled and stored?
+
Handle it as an air- and moisture-sensitive organometallic, using eye protection, gloves and a suitable particulate respirator (type N95 / P1) under inert, well-ventilated conditions. Store cold, typically at around −20°C. It is classified as severely hazardous to water (WGK 3, Germany) and has a melting point of 32–48°C and a flash point above 149°C; prevent release to drains and the environment. Always consult the Safety Data Sheet before use.
How is Bis(1,5-cyclooctadiene)iridium(I) tetrafluoroborate packed, shipped and exported?
+
It is packed in tightly sealed, inert containers appropriate to the order size and labelled to international standards, with cold-chain and air-sensitive handling considered where required. As a specialist exporter, Tech Serve Solutions arranges compliant documentation and shipment to laboratories and manufacturers worldwide.
How do I request a sample or quote?
+
Contact Tech Serve Solutions with your required quantity, packaging and destination, quoting CAS 35138-23-9. We will respond with availability, lead time, specification details and a formal quotation.
▶ Related products

Benzeneruthenium(II) chloride dimer
Ru2(C6H6)2Cl4
Catalysis & Inorganic
Benzoylferrocene
C17H14FeO
Catalysis & Inorganic
Benzyldiphenylphosphine
C6H5CH2P(C6H5)2
Catalysis & Inorganic
Beryllium
Be
Catalysis & Inorganic
Beryllium oxide
BeO
Catalysis & Inorganic![Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer — chemical structure, CAS 12257-42-0; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F12257-42-0.png&w=3840&q=75)
Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer
Catalysis & Inorganic
![Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo — chemical structure, CAS 1228149-03-8; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1228149-03-8.png&w=3840&q=75)
Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo
1-d:1′
Catalysis & Inorganic![Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride (C16H20ClN3Ni) — chemical structure, CAS 1033772-47-2; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1033772-47-2.png&w=3840&q=75)
Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride
C16H20ClN3Ni
Catalysis & Inorganic▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis