Bis(diphenylphosphine)methane monooxide
Bis(diphenylphosphine)methane monooxide (CAS 23176-18-3), formula (C6H5)2POCH2P(C6H5)2, is the mono-oxidised derivative of bis(diphenylphosphino)methane (dppm), with a molecular weight of 400.39. This crystalline organophosphorus compound combines a trivalent phosphine donor with a phosphine-oxide donor on a single methylene backbone, giving it a hemilabile P,O character. It is used principally as a ligand in coordination chemistry and homogeneous catalysis and as a building block in chemical synthesis. Tech Serve Solutions supplies it at 97% assay for research and industrial use.
- IUPAC
- Bis(diphenylphosphinomethyldiphenylphosphine oxide
- Synonyms
- Bis(diphenylphosphine)methane monooxideBis(diphenylphosphino)methane monoxidedppm monoxidedppmO(Diphenylphosphino)methyldiphenylphosphine oxideDiphenyl[(diphenylphosphoryl)methyl]phosphine(C6H5)2POCH2P(C6H5)2
Hemilabile P,O ligand in coordination chemistry
The molecule offers two distinct donor sites, a soft phosphine and a harder phosphine oxide, which allows it to bind transition metals in a flexible, hemilabile manner. This makes it useful for preparing and studying metal complexes where a coordination site can be reversibly opened.
Ligand for homogeneous catalysis
As a polydentate phosphine-derived ligand it is employed in the design of organometallic catalysts. The differing donor strengths of its two phosphorus centres can be used to tune metal reactivity and selectivity.
Building block in organophosphorus synthesis
It serves as an intermediate and reference compound in the preparation of related phosphine, phosphine-oxide and bridging diphosphine systems, and as a controlled partial-oxidation product of dppm.
Research and analytical reference reagent
Supplied at 97% assay with a defined melting point of 187-191 degrees C, it is suitable as a reagent and characterisation standard in academic and industrial laboratories working on phosphorus coordination chemistry.
| Molecular weight | 400.39 |
|---|---|
| Linear formula | (C6H5)2POCH2P(C6H5)2 |
| Assay | 97% |
| Melting point | 187-191 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| 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(diphenylphosphine)methane monooxide used for?
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It is used chiefly as a hemilabile P,O ligand in coordination chemistry and homogeneous catalysis, and as a building block and reference compound in organophosphorus synthesis. Its phosphine and phosphine-oxide donors let it coordinate transition metals in a flexible way.
What is the CAS number and molecular formula of Bis(diphenylphosphine)methane monooxide?
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Its CAS number is 23176-18-3 and its molecular formula is (C6H5)2POCH2P(C6H5)2, the monooxide of bis(diphenylphosphino)methane (dppm). The molecular weight is 400.39 and the MDL number is MFCD00356638.
What grade and purity does Tech Serve Solutions supply?
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We supply Bis(diphenylphosphine)methane monooxide at a typical assay of 97% as a research/technical-grade reagent with a melting point of 187-191 degrees C. We do not represent it as USP, BP or EP pharmacopoeia grade. A certificate of analysis can be provided with each batch.
How should Bis(diphenylphosphine)methane monooxide be handled and stored?
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Handle it with suitable personal protective equipment, including eye shields, gloves and an N95 (US) or P1 (EN143) respirator filter, and work with good ventilation while avoiding dust formation. It is classified as water-hazard class WGK 3 in Germany, so prevent release to drains, soil and water. Always consult the Safety Data Sheet before use.
How is Bis(diphenylphosphine)methane monooxide packed, shipped and exported?
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It is supplied in sealed laboratory and bulk pack sizes with full labelling and documentation. As a global supplier and exporter, Tech Serve Solutions arranges compliant international shipping with the relevant Safety Data Sheet and certificate of analysis. Contact us for available pack sizes and lead times.
How do I request a sample or quote?
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Send us the quantity, required pack size and destination country and our team will respond with availability, documentation and a formal quotation. Samples can be arranged for qualified research and industrial customers on request.
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