Textbook Question
Give names or structures for the following ammonium salts. Indicate whether each is the ammonium salt of a primary, secondary, or tertiary amine.
c. N-Butyl-N-isopropylhexylammonium chloride
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17. Amines
Naming Ammonium Salts
Multiple Choice
Which of the following represents m-bromo-N-ethyl-N-isopropylbenzenammonium ion?
A
B
C
D
Verified step by step guidance1
Identify the structure of m-bromo-N-ethyl-N-isopropylbenzenaminium. The name indicates a benzene ring with a bromine substituent at the meta position, and an ammonium group with ethyl and isopropyl groups attached.
The 'm-' prefix in 'm-bromo' indicates that the bromine is attached to the benzene ring at the meta position relative to the ammonium group.
The 'N-ethyl-N-isopropyl' part of the name indicates that the nitrogen atom of the ammonium group is bonded to an ethyl group (CH2CH3) and an isopropyl group ((CH3)2CH).
The 'benzenaminium' part of the name indicates that the nitrogen is part of an ammonium ion, which means it carries a positive charge.
Examine the provided images to find the structure that matches these criteria: a benzene ring with a bromine at the meta position, an ammonium group with an ethyl and an isopropyl group, and a positive charge on the nitrogen.
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