Talk:Diphosphines
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Text dump of some stuff. Waiting for inspiration to do something about it. --Rifleman 82 04:02, 6 October 2007 (UTC)
[edit] dppv
Dppv is the acronym for 1,2-bis(diphenylphosphino)ethylene, (C6H5)2PCH=CHP(C6H5)2. Both cis (m.p. 125 °C) and trans (m.p. 126°C) isomers are known, being derived from the respective isomers of ClCH=CHCl. The substitution of chloride is stereospecific. The cis isomer, however, is almost exclusively used for applications of a ligand.
[edit] dmpe
dmpe Chemical name 1,2-bis(dimethylphosphino) ethane Chemical formula (CH3)2PCH2CH2P(CH3)2 Molecular mass 150.14 g/mol CAS Number 23936-60-9 Boiling point 180 °C Flash point 2 °F Density 0.9 g/mL at 25 °C Disclaimer and references Dmpe is prepared in a similar way to that of dppe.
- 1. (CH3)2P-P(CH3)2 + 2Na → 2NaP(CH3)2
- 2. 2NaP(CH3)2 + ClCH2CH2Cl → (CH3)2PCH2CH2P(CH3)2 + 2NaCl
Dmpe should be handled with care. It is toxic and exposure to the air may result in ignition.
[edit] Dppf
1,1'-Bis(diphenylphosphino)ferrocene (dppf) is also used as a ligand. As its name implies, its backbone is made up of a ferrocene moiety, as opposed to the ethylene backbone of dppe.
