cis-1,2-Bis(diphenylphosphino)ethylene
cis-1,2-Bis(diphenylphosphino)ethylene (CAS: 983-80-2) is a white to off-white crystalline solid with a molecular weight of 396.40 g/mol. This diphosphine ligand is commonly employed in organometallic chemistry and catalysis. Its structure, featuring two diphenylphosphino groups linked by a cis-double bond, makes it a valuable chelating ligand for various transition metals, facilitating numerous catalytic transformations. TSS supplies this compound for research and synthesis.
- IUPAC
- cis-1,2-Bis(diphenylphosphino)ethene,cis-Vinylenebis(diphenylphosphine)
- Synonyms
- cis-1,2-Bis(diphenylphosphino)ethenecis-Vinylenebis(diphenylphosphine)(C6H5)2PCH=CHP(C6H5)2

Homogeneous Catalysis
As a bidentate phosphine ligand, it stabilises transition metal complexes used in homogeneous catalysis. It is particularly effective in cross-coupling reactions, such as Suzuki, Heck, and Sonogashira couplings, where it influences reaction rates and selectivities.
Organometallic Synthesis
This compound serves as a key building block for synthesising diverse organometallic complexes. Its ability to chelate metals like palladium, platinum, and nickel allows for the study and development of novel catalytic systems and materials.
Coordination Chemistry
It is utilized in coordination chemistry to form stable complexes with various metal centres. These complexes are studied for their structural, electronic, and catalytic properties, contributing to fundamental chemical research.
| Molecular weight | 396.40 |
|---|---|
| Linear formula | (C6H5)2PCH=CHP(C6H5)2 |
| Assay | 97% |
| Melting point | 122-124 °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 cis-1,2-Bis(diphenylphosphino)ethylene used for?
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cis-1,2-Bis(diphenylphosphino)ethylene is primarily used as a bidentate phosphine ligand in homogeneous catalysis, particularly in cross-coupling reactions, and in the synthesis of organometallic complexes for research purposes.
What are the CAS number and formula for cis-1,2-Bis(diphenylphosphino)ethylene?
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The CAS number is 983-80-2. The linear formula is (C6H5)2PCH=CHP(C6H5)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies cis-1,2-Bis(diphenylphosphino)ethylene with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling this compound?
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This compound is classified as a warning substance. It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (type N95), eyeshields, and gloves, should be worn. Ensure adequate ventilation.
How is cis-1,2-Bis(diphenylphosphino)ethylene packed and shipped?
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Products are carefully packed according to international shipping regulations and exported globally by Tech Serve Solutions to meet the needs of researchers and industries worldwide.
How can I request a sample or quote for cis-1,2-Bis(diphenylphosphino)ethylene?
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To request a sample or a quote, please contact our sales department through the website or by telephone. Our team will assist you promptly.
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