Bis(diphenylphosphino)acetylene
Bis(diphenylphosphino)acetylene (CAS 5112-95-8) is an organophosphorus compound with the formula (C6H5)2PC≡CP(C6H5)2 (C26H20P2) and a molar mass of 394.38 g/mol. It is a rigid bidentate phosphine ligand in which two diphenylphosphino groups are bridged by a carbon–carbon triple bond. Supplied as a crystalline solid (m.p. 86–88 °C), it is used chiefly in coordination chemistry and homogeneous catalysis to form transition-metal complexes. Tech Serve Solutions supplies it as a research-grade reagent at 98% assay.
- IUPAC
- ((Diphenylphosphino)ethynyl)diphenylphosphine,Bis(diphenylphosphino)ethyne
- Synonyms
- Bis(diphenylphosphino)acetyleneBis(diphenylphosphino)ethyne((Diphenylphosphino)ethynyl)diphenylphosphine1,2-Bis(diphenylphosphino)acetyleneDPPACAS 5112-95-8
Bidentate phosphine ligand
The two phosphorus donor atoms allow the molecule to act as a chelating or bridging ligand toward transition metals. The acetylenic backbone makes it a comparatively rigid diphosphine, useful where a defined bite angle or geometry is required.
Homogeneous catalysis
Metal complexes of diphosphine ligands of this type are widely studied in homogeneous catalysis. The ligand is used to prepare and modify catalytically active transition-metal centres for research applications.
Coordination and organometallic chemistry
It serves as a building block for mono- and polynuclear metal complexes, including assemblies that exploit both the phosphine donors and the alkyne unit. This makes it a useful tool in organometallic and cluster chemistry research.
Materials and supramolecular research
The combination of two phosphine sites and an unsaturated spacer supports the construction of metal-bridged and supramolecular architectures. It is employed as a laboratory reagent in exploratory materials chemistry.
| Molecular weight | 394.38 |
|---|---|
| Linear formula | (C6H5)2PC≡CP(C6H5)2 |
| Assay | 98% |
| Melting point | 86-88 °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) | 26-37/39 |
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(diphenylphosphino)acetylene used for?
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It is used as a rigid bidentate phosphine ligand in coordination chemistry and homogeneous catalysis. The two diphenylphosphino groups, linked by a carbon–carbon triple bond, coordinate to transition metals to form complexes studied in organometallic, catalytic and materials research. It is supplied as a laboratory reagent.
What is the CAS number and molecular formula of Bis(diphenylphosphino)acetylene?
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The CAS number is 5112-95-8. The linear formula is (C6H5)2PC≡CP(C6H5)2, corresponding to the molecular formula C26H20P2, with a molecular weight of 394.38 g/mol. Related identifiers include MDL number MFCD00003045 and EC number 225-842-8.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bis(diphenylphosphino)acetylene as a research-grade reagent with a typical assay of 98%. It is a crystalline solid with a reported melting point of 86–88 °C. We do not represent this material as USP, BP or EP grade; it is intended for research, analytical and industrial use.
What are the safety and handling considerations for Bis(diphenylphosphino)acetylene?
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It carries 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). Avoid breathing dust and avoid contact with skin and eyes; use a dust mask (N95), eye protection and gloves (P261, P305+P351+P338). It is classified WGK 3 (highly hazardous to water). Always consult the Safety Data Sheet before handling.
How is Bis(diphenylphosphino)acetylene packed, shipped and exported?
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The material is packed as a solid in appropriately sealed, labelled containers with sizes selected to suit laboratory and bulk requirements. As a specialist supplier and exporter since 1998, Tech Serve Solutions arranges compliant documentation, an accompanying Safety Data Sheet and suitable transport for domestic and international shipments. Please confirm your destination and quantity when enquiring.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required quantity, packing preference and destination, and our team will respond with availability, lead time and a formal quotation. Sample requests can be discussed on enquiry, subject to availability and applicable handling requirements.
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