Pentaammine(trifluoromethanesulfonato)osmium(III) triflate
Pentaammine(trifluoromethanesulfonato)osmium(III) triflate (CAS: 83781-30-0) is an osmium salt with the chemical formula [CF3SO3Os(NH3)5](O3SCF3)2 and a molecular weight of 722.59 g/mol. This compound serves as a valuable reagent in synthetic chemistry. Its applications include facilitating the dearomatization of anilines and the stereoselective synthesis of cyclohexanediones via Michael additions to phenols. It is also a precursor for Fischer carbyne complexes, underscoring its utility in organometallic chemistry.
- IUPAC
- Pentaammine(trifluoromethanesulfonato)osmium(III) trifluoromethanesulfonate
2) — chemical structure, CAS 83781-30-0; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F83781-30-0.png&w=3840&q=75)
Dearomatization of Anilines
This osmium(III) complex is employed in chemical synthesis to achieve the dearomatization of aniline compounds. This transformation is crucial for accessing novel molecular architectures.
Stereoselective Synthesis of Cyclohexanediones
It catalyses the stereoselective synthesis of cyclohexanediones through osmium(II)-promoted Michael additions to phenols. This application is important for building complex cyclic structures with defined stereochemistry.
Precursor to Fischer Carbyne Complexes
Pentaammine(trifluoromethanesulfonato)osmium(III) triflate serves as a key precursor for the synthesis of Fischer carbyne complexes. These organometallic compounds are valuable in various catalytic processes.
| Molecular weight | 722.59 |
|---|---|
| Linear formula | [CF3SO3Os(NH3)5](O3SCF3)2 |
| Form | powder |
| Application | Useful for the dearomatization of anilines,1 and the stereoselective synthesis of cyclohexanediones by osmium(II)-promoted Michael additions to phenols.2 Precursor to Fischer carbyne complexes.3 |
| Melting point | ~276 °C(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) | 26-36 |
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 Pentaammine(trifluoromethanesulfonato)osmium(III) triflate used for?
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This compound is used for the dearomatization of anilines, the stereoselective synthesis of cyclohexanediones by osmium(II)-promoted Michael additions to phenols, and as a precursor to Fischer carbyne complexes.
What is the CAS number and formula for Pentaammine(trifluoromethanesulfonato)osmium(III) triflate?
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The CAS number is 83781-30-0, and the chemical formula is [CF3SO3Os(NH3)5](O3SCF3)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical as a technical/research grade powder. We do not represent it as USP, BP, or EP grade.
How should Pentaammine(trifluoromethanesulfonato)osmium(III) triflate be handled?
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This compound is a Warning substance, causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Wear appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, and gloves. Ensure good ventilation. Avoid breathing dust. In case of contact with eyes, rinse cautiously with water for several minutes and seek medical advice.
How is this chemical packed, shipped, and exported?
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This product is supplied as a powder. Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, ensuring appropriate packaging and adherence to all export regulations.
How can I request a sample or quote?
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To request a sample or a quotation, please visit the Tech Serve Solutions website or contact our sales department directly.
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