Dimethylphosphine

Dimethylphosphine
Names
Preferred IUPAC name
Dimethylphosphane
Identifiers
3D model (JSmol)
ChemSpider
UNII
  • InChI=1S/C2H7P/c1-3-2/h3H,1-2H3
    Key: YOTZYFSGUCFUKA-UHFFFAOYSA-N
  • CPC
Properties
(CH3)2PH
Molar mass 62.052 g·mol−1
Appearance Colorless gas or colorless liquid
Odor Malodorous
Boiling point 21.1 °C
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 toxic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Dimethylphosphine is the organophosphorus compound with the formula (CH3)2PH, often written Me2PH. It is a malodorous gas that condenses to a colorless liquid just below room temperature. Although it can be produced by methylation of phosphine, a more practical synthesis involves the reduction of tetramethyldiphosphine disulfide with tributylphosphine:[1]

(CH3)2P(S)−P(S)(CH3)2 + P((CH2)3CH3)3 + H2O → (CH3)2PH + SP((CH2)3CH3)3 + (CH3)2P(O)(OH)

Reactions

The compound exhibits the properties characteristic of a secondary phosphine, i.e., a compound of the type R2PH. It can be oxidized to the phosphinic acid:

(CH3)2PH + O2 → (CH3)2P(O)(OH)

It can be protonated to give the dimethylphosphonium ion:

(CH3)2PH + H+ → [(CH3)2PH2]+

With strong bases (e.g., lithium amide, it can be deprotonated to give dimethyl phosphide derivatives (e.g., lithium dimethyl phosphide):

(CH3)2PH + LiNH2 → (CH3)2PLi + NH3

References

  1. ^ A. Trenkle, H. Vahrenkamp, John Svoboda, Leo Brewer “Dimethylphosphine” Inorganic Syntheses 1982, volume 21, p. 180. doi:10.1002/9780470132524.ch40

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.