Structure Of Amines

Step 1: Recall classification of amines.
- A primary amine (1°) has one alkyl group attached to nitrogen (R–NH ).
- A secondary amine (2°) has two alkyl groups attached to nitrogen (R –NH).
- A tertiary amine (3°) has three alkyl groups attached to nitrogen (R –N).

Step 2: Apply to given case.
In (CH ) N, nitrogen is bonded to three methyl (–CH ) groups and has no hydrogen directly attached to it.

Step 3: Identify type.
Since three alkyl groups are attached to nitrogen, it is a tertiary amine.
Step 4: Final Answer.