1,2-bis (diphenylphosphino) ethane
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| General | |||||||||||||||||||
| Surname | 1,2-bis (diphenylphosphino) ethane | ||||||||||||||||||
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| Molecular formula | C 26 H 24 P 2 | ||||||||||||||||||
| Brief description |
yellowish powder |
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| properties | |||||||||||||||||||
| Molar mass | 398.42 g mol −1 | ||||||||||||||||||
| Physical state |
firmly |
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| Melting point |
138-142 ° C |
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| solubility |
soluble in THF : 75 g l −1 (25 ° C) |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||||||||
Bis (diphenylphosphino) ethane is an organic compound . It is used as a ligand for catalytically active complexes .
presentation
Dppe can be made from the reaction between chlorodiphenylphosphine , 1,2-dibromoethane and metallic sodium . First, chlorodiphenylphosphine is metalated by sodium. The species formed then attacks the bromoalkane nucleophilically . Sodium bromide and sodium chloride are produced as by-products .
- Synthesis of dppe. Ph = phenyl
use
Dppe is used as a bidentate chelate ligand in homogeneous transition metal catalysis , where the two phosphorus atoms coordinate on the metal used .
Individual evidence
- ↑ a b c d data sheet 1,2-bis (diphenylphosphino) ethane (PDF) from Merck , accessed on April 12, 2011.
- ↑ E. de Wolf, B. Richter, B.-J. Deelman, G. van Koten in: J. Org. Chem. 2000, 65, 17, 5424-5427.
- ↑ Kurt Issleib , Dietrich-Wolfgang Müller: Alkali-phosphorus compounds and their reactive behavior, III. Representation ditert. Phosphines R 2 P- [CH 2 ] n -PR 2 . In: Chemical Reports . tape 92 , no. December 12 , 1959, p. 3175-3182 , doi : 10.1002 / cber.19590921221 ( wiley.com ).