• Source: 1,2-Bis(diphenylphosphino)ethylene

cis-1,2-Bis(diphenylphosphino)ethylene (dppv) is an organophosphorus compound with the formula C2H2(PPh2)2 (Ph = C6H5). Both the cis and trans isomers are known, but the cis isomer is of primary interest. Classified as a diphosphine ligand, it is a bidentate ligand in coordination chemistry. For example it gives rise to the complex Ni(dppv)2 and the coordination polymer [Ni(dppv)]n. As a chelating ligand, dppv is very similar to 1,2-bis(diphenylphosphino)benzene.
The diphosphine is prepared by reaction of lithium diphenylphosphide with cis-dichloroethylene.

2 LiPPh2 + C2H2Cl2 → C2H2(PPh2)2 + 2 LiCl
trans-1,2-Bis(diphenylphosphino)ethylene is made similarly, but using trans-dichloroethylene.




References

Kata Kunci Pencarian:

• 1,2-Bis(diphenylphosphino)benzene
• 1,2-Bis(diphenylphosphino)ethylene
• 1,3-Bis(diphenylphosphino)propane
• Hapticity
• Pnictogen-substituted tetrahedranes
• Disulfur dioxide
• 1,2,4,5-Tetrabromobenzene
• Ligand
• Glossary of chemical formulae
• Gábor Laurenczy