Bis(pentamethylcyclopentadienyl)osmium(II)
Bis(pentamethylcyclopentadienyl)osmium(II), CAS 100603-32-5, is an organometallic osmium sandwich complex with the formula Os(C5(CH3)5)2 and a molar mass of 460.68 g/mol. Also known as decamethylosmocene, it is the permethylated osmocene in which an osmium(II) centre is bound between two pentamethylcyclopentadienyl rings. It is used principally as a reagent and building block in organometallic synthesis and inorganic chemistry research. Tech Serve Solutions supplies it as a research-grade material to laboratory and industrial customers worldwide.
- IUPAC
- Decamethylosmocene
- Synonyms
- DecamethylosmoceneBis(pentamethylcyclopentadienyl)osmium(II)Bis(pentamethylcyclopentadienyl)osmiumOsmocene, decamethyl-Decamethylosmocene(II)Os(C5(CH3)5)2
Organometallic synthesis reagent
Serves as a reactant and precursor in the preparation of decamethyl osmocene derivatives and related osmium organometallic compounds. The electron-rich, sterically protected pentamethylcyclopentadienyl framework makes it a versatile building block for further functionalisation.
Triple-decker and capped metallocene chemistry
Employed in the synthesis of 30-electron triple-decker complexes of iron-group metals and of bimetallic manganese tricarbonyl-capped metallocenes. These studies probe metal-metal interactions and the electronic structure of multilayer sandwich systems.
Osmocenylcarbenium ion studies
Used as a starting material for nonamethylosmocenylcarbenium ions, supporting investigations into the stabilisation of cationic centres adjacent to an osmocene unit and the reactivity of permethylated metallocenes.
Inorganic and catalysis research
Applied across catalysis and inorganic chemistry programmes that require a well-defined osmium(II) sandwich complex. It is suited to academic and industrial laboratories studying organometallic structure, bonding and redox behaviour.
| Molecular weight | 460.68 |
|---|---|
| Linear formula | Os(C5(CH3)5)2 |
| Application | Reactant for synthesis of:• Bimetallic manganese tricarbonyl-capped metallocenes1• 30-Electron triple-decker complexes of iron group metals2• Nonamethylosmocenylcarbenium ions3• Decamethyl osmocene derivatives4 |
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 Bis(pentamethylcyclopentadienyl)osmium(II) used for?
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It is used mainly as a reagent and building block in organometallic and inorganic chemistry research. Documented uses include the synthesis of decamethyl osmocene derivatives, bimetallic manganese tricarbonyl-capped metallocenes, 30-electron triple-decker complexes of iron-group metals, and nonamethylosmocenylcarbenium ions.
What is the CAS number and molecular formula of Bis(pentamethylcyclopentadienyl)osmium(II)?
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Its CAS number is 100603-32-5 and its molecular formula is Os(C5(CH3)5)2, with a molecular weight of 460.68 g/mol. The MDL number is MFCD00058711. It is also widely known as decamethylosmocene.
What grade and purity does Tech Serve Solutions supply?
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We supply Bis(pentamethylcyclopentadienyl)osmium(II) as a research-grade reagent for synthesis and laboratory use. A specific assay is confirmed on the certificate of analysis for each batch on request. We do not represent this material as USP, BP or EP pharmacopoeia grade.
What are the safety and handling precautions for this compound?
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It is classified under GHS07 with the signal word Warning and carries hazard statements H315 (causes skin irritation), H319 (causes serious eye irritation) and H335 (may cause respiratory irritation). Handle with a type N95 dust mask, eye protection and gloves, avoid dust formation, and consult the Safety Data Sheet before use. It is assigned German water hazard class WGK 3.
How is Bis(pentamethylcyclopentadienyl)osmium(II) packed, shipped and exported?
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It is packed in tightly sealed, appropriately labelled laboratory containers sized to the order, with full documentation including a certificate of analysis and Safety Data Sheet. Tech Serve Solutions exports worldwide and arranges packaging and transport in line with applicable dangerous-goods and import regulations for the destination.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required quantity, packaging and destination, and our team will respond with availability, lead time and a formal quotation. Sample requests for evaluation can be accommodated subject to availability.
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