Now amines are classified based on how many carbon atoms are bonded to the nitrogen atom. Now, the classifications primary, we show it as N1, secondary is N2, tertiary is N3. With amines, we actually get quaternary structures as well. Now in a quaternary, so N4, we no longer call it just an amine. We call it an ammonium ion. Here we're going to say for an ammonium ion that's quaternary, we're going to say the nitrogen atom bonds to 4 carbon atoms and has a plus one charge. Remember, when nitrogen makes 4 bonds, it has a plus one for its formal charge. So let's take a look down here. We're talking about the classifications of our amines. So here we're going to say for the first structure, the nitrogen, and there's a nitrogen in each, just equals each of our nitrogens. In the first structure, the nitrogen's connected to one carbon directly, so this is a primary amine. For the next one, it's connected to 2 carbons directly, so this is secondary. Then here it's connected to 3 carbons directly, so it's tertiary. Then finally, we have our quaternary ammonium ion. Quaternary because the nitrogen is connected to 4 carbons directly, and it's an ion because it possesses a charge of plus 1. Remember, when nitrogen makes 4 bonds, it's going to be plus 1 for its charge.
Classifying Amines - Online Tutor, Practice Problems & Exam Prep
Amine Classification Concept 1
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Amine Classification Example 1
Video transcript
Here it says classify each structure as primary, secondary, tertiary or a quaternary ammonium ion. So for the first one, nitrogen is directly connected to 2 carbons. So this would be a secondary amine. For the next one, nitrogen is directly connected to just one carbon, so it's a primary amine. For the next one, nitrogen's connected directly to 1, 2, 3, 4 carbons, so now it becomes a quaternary ammonium ion. Ion, meaning that it has a charge. When nitrogen makes 4 bonds, it's plus 1 for its charge. And then finally, in the last one, nitrogen directly connected to 3 carbons, so it's a tertiary amine. And this would be the classifications for each of the amines given to us within this example question.
In the following structure, identify each functional group as primary, secondary, tertiary amine, or as a quaternary ammonium ion.
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- Identify the following compounds as primary, secondary, or tertiary amines. a. CH₃(CH₂)₄ CH₂NH₂
- Identify the following compounds as primary, secondary, or tertiary amines. b. CH₃CH₂CH₂NHCH(CH₃)₂
- Identify the following compounds as primary, secondary, or tertiary amines. <IMAGE>
- <IMAGE>a. For the compound above, identify each nitrogen as either a primary, secondary, tertiary, quate...
- Provide compounds that fit the following descriptions:a. Two amines that are gases at room temperatureb. A het...
- Classify each of the following amines as primary (1°), secondary (2°), or tertiary (3°):c <IMAGE>
- Classify each of the following amines as primary (1°), secondary (2°), or tertiary (3°):d. <IMAGE>
- Classify each of the following amines as primary (1°), secondary (2°), or tertiary (3°):c. <IMAGE>