Dimethylphosphine

Dimethylphosphine is a chemical compound with the formula (CH3)2PH. It is a colorless liquid that is used as a ligand in inorganic chemistry. This compound is a phosphine, which are commonly used as reducing agents and catalysts in a variety of chemical reactions.

Structure and Bonding

Dimethylphosphine is a molecule with a trigonal pyramidal shape. The phosphorus atom is at the apex of the pyramid, with the two methyl groups and the hydrogen atom forming the base. The P-H bond is polar, with the phosphorus atom carrying a partial positive charge and the hydrogen atom carrying a partial negative charge.

Synthesis

Dimethylphosphine can be synthesized by the reaction of phosphine with methyl iodide in the presence of a base such as potassium hydroxide. The reaction proceeds via a S_N2 reaction mechanism, with the iodide ion acting as a leaving group.

Applications

In inorganic chemistry, dimethylphosphine is used as a ligand in the synthesis of transition metal complexes. These complexes are often used as catalysts in organic synthesis and industrial chemistry.

Safety

Dimethylphosphine is a flammable liquid and should be handled with care. It can cause burns and eye damage, and may be harmful if inhaled.

See also

• Phosphine
• Methyl iodide
• Potassium hydroxide