Question

Which of the following is the tertiary amine?
A. $C{H_3}N{(C{H_3})_2}$
B. $N{(C{H_3})_3}$
C. A , B
D. $C{H_3}N{H_2}$

Answer 1

Amines are a type of organic compounds that are formed by substituting one or more hydrogen atoms in a molecule of ammonia with an alkyl or aryl group. Amines are frequently divided into groups based on their chemical properties. They are commonly divided into two types: aliphatic amines (those with only hydrogen and alkyl substituents) and aromatic amines (the nitrogen atom is connected to an aromatic ring).

Complete answer:
Tertiary amines are those where the nitrogen consists of three organic substituents.
From the above given options, $C{H_3}N{(C{H_3})_2}$ and $N{(C{H_3})_3}$ are tertiary amines as they have three alkyl groups attached to the nitrogen atom.
Tetrahedral nitrogen centres make up alkylamines. The bond angle between $C - N - C$ and $C - N - H$ is ${109^ \circ }$. When compared to the $C - C$ range, the distance between $C - N$ is shorter. The amines can also be chiral, meaning that the nitrogen centre has four substitutions that form lone pairs.

Hence, the correct option is C. A , B .

Additional Information:
Amines, unlike ammonia, act as bases and are quite powerful. The basicity of amines varies from molecule to molecule and is mostly determined by: the lone pair of nitrogen electrons presence. Some of the uses of Amines include: Manufacture of azo dyes, Used in drugs, In gas treatment mainly in the removal of carbon dioxide from natural gas, etc, As corrosion inhibitors, In the synthesis of many products.

Note:
The presence of an electron-donating group increases the basicity of the amines. The electron-withdrawing group decreases the basicity.