Trichloromethyl

Trichloromethyl is a functional group that has the formula –CCl₃. The naming of is group is derived from the methyl group (which has the formula –CH₃), by replacing each hydrogen atom by a chlorine atom. Compounds with this group are a subclass of the organochlorines. Some notable examples of compounds with this group are trichloromethane H–CCl₃, 1,1,1-trichloroethane H₃C–CCl₃, and chloral HOC–CCl₃. The trichloromethyl group has a significant electronegativity.^{[citation needed]} For this reason, trichloromethyl-substituted acids are often stronger than the original. For example, the acidity constant (pK_a) of trichloroacetic acid HOOC–CCl₃ is 0.77, whereas that of acetic acid is 4.76.^[1][2]

By the same principle, the trichloromethyl group generally lowers the basicity of organic compounds.

• Trifluoromethyl
• Trichloromethoxy

0.00 (0 votes)