Chloroiodomethane

Chloroiodomethane is a chemical compound that belongs to the class of halomethanes. It is also known as iodochloromethane and is represented by the chemical formula CH2ClI.

Structure and Bonding

Chloroiodomethane is a triatomic molecule with a tetrahedral geometry. The carbon atom is at the center, bonded to a hydrogen, a chlorine, and an iodine atom. The C-I bond is longer and weaker than the C-Cl bond due to the larger size and lower electronegativity of iodine compared to chlorine.

Synthesis

Chloroiodomethane can be synthesized by the reaction of iodomethane with chlorine gas in the presence of light. The light provides the energy required to break the Cl-Cl bond in the chlorine molecule, initiating the reaction.

Uses

Chloroiodomethane is used as a reagent in organic synthesis. It is particularly useful in the Finkelstein reaction, a halogen exchange reaction used to convert alkyl chlorides or bromides to alkyl iodides.

Safety

Like other halomethanes, chloroiodomethane is a volatile and potentially hazardous compound. It can cause irritation to the eyes, skin, and respiratory tract. Proper safety measures should be taken while handling this compound.

See Also

• Halomethane
• Iodomethane
• Chloromethane
• Finkelstein reaction