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Trimethylphosphine is the chemical compound with the formula P(CH3)3, commonly abbreviated PMe3. This colorless liquid has a strongly unpleasant odour, which characteristic of alkylphosphines. It is a pyramidal molecule with C3v symmetry, similar to ammonia (NH3) and phosphine (PH3). As a ligand, its cone angle is 118°.
Additional recommended knowledge
PMe3 is prepared using Grignard reagents:
The synthesis is conducted in a dibutyl ether, from which the more volatile PMe3 can be distilled.
Trimethylphosphine is a highly basic ligand that forms complexes with most metals. The synthesis of an illustrative example is shown:
Its complex with silver iodide, AgI(PMe3) is a weighable, air stable compound that releases PMe3 upon heating.
PMe3 is potentially pyrophoric, as well as toxic.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Trimethylphosphine". A list of authors is available in Wikipedia.|