1,1-Bis(diphenylphosphino)ethylene
1,1-Bis(diphenylphosphino)ethylene (CAS: 84494-89-3) is an organophosphorus compound with the linear formula [(C6H5)2P]2C=CH2 and a molecular weight of 396.40 g/mol. It serves as a valuable polydentate phosphine ligand in coordination chemistry and catalysis. This compound is primarily utilized as a reactant in the synthesis of various transition metal complexes and catalytic systems, particularly those involving palladium and copper.
- IUPAC
- VDPP,Vinylidenebis(diphenylphosphine)
- Synonyms
- [(C6H5)2P]2C=CH2VDPPVinylidenebis(diphenylphosphine)
![1,1-Bis(diphenylphosphino)ethylene ([(C6H5)2P]2C=CH2) — chemical structure, CAS 84494-89-3; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F84494-89-3.png&w=3840&q=75)
Synthesis of Palladium Catalysts
Used as a reactant for preparing cyclometallated palladium diphosphane catalysts via Michael addition reactions, and for forming A-frame structures with palladacycles.
Development of Bridging Ligands
Functions as a carbon-bridged diphosphine ligand in chromium-catalyzed ethylene tri- and tetramerization reactions.
Preparation of Polynuclear Complexes
A key reactant in the synthesis of tetranuclear palladacycles with bridging diphosphine ligands and tetranuclear bromide-bridged Cu(I) complexes.
Ligand Modification
Facilitates the preparation of functionalized bis-phosphine monoxide ligands under the catalysis of chiral palladacycles.
| Molecular weight | 396.40 |
|---|---|
| Linear formula | [(C6H5)2P]2C=CH2 |
| Assay | 98% |
| Application | Reactant for preparation of:• Cyclometallated palladium diphosphane catalysts by Michael addition reactions1• A-frame structures with palladacycles (chelating agent)2• Functionalized bis-phosphine monoxide ligands catalyzed by chiral palladacycles3• Tetranuclear palladacycles with bridging diphosphine ligands4• Tetranuclear bromide-bridged Cu(I) complexes5• Used as carbon-bridged diphosphine ligand in Cr-catalyzed ethylene tri- and tetramerization reactions6 |
| Melting point | 110-111 °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 1,1-Bis(diphenylphosphino)ethylene used for?
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1,1-Bis(diphenylphosphino)ethylene is used as a reactant in the synthesis of various transition metal complexes, including palladium and copper catalysts, and as a bridging diphosphine ligand in catalytic reactions such as ethylene oligomerization.
What is the CAS number and formula for 1,1-Bis(diphenylphosphino)ethylene?
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The CAS number is 84494-89-3 and the linear formula is [(C6H5)2P]2C=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,1-Bis(diphenylphosphino)ethylene with an assay of 98%. This product is supplied for research and development purposes and is not represented as meeting USP, BP, EP, or other pharmacopoeial standards.
How should 1,1-Bis(diphenylphosphino)ethylene be handled?
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1,1-Bis(diphenylphosphino)ethylene is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, in a well-ventilated area.
How is 1,1-Bis(diphenylphosphino)ethylene packed and shipped?
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This chemical is carefully packed according to international shipping regulations and is available for export globally by Tech Serve Solutions.
How can I request a sample or quote for 1,1-Bis(diphenylphosphino)ethylene?
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To request a sample or obtain a quotation, please contact our sales department with your specific requirements.
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