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Trimethylphosphine
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°.[1] Additional recommended knowledgePMe3 is prepared using Grignard reagents:[2]
The synthesis is conducted in a dibutyl ether, from which the more volatile PMe3 can be distilled. Coordination chemistryTrimethylphosphine 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. SafetyPMe3 is potentially pyrophoric, as well as toxic. References
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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. |