Greetings,
This post expands upon my last post on 'An Introduction to Amines'. My last post explained that the amine functional group is -NH2. While that is a true statement, it is only part of the "story".
The -NH2 group is the functional group of a primary amine. Because of the versatile bonding of Nitrogen, two other types of amines exist; secondary and tertiary. Technically, there is a fourth type of amine (quaternary), but that form is a +1 polyatomic ion, not a neutral molecular structure. The following diagram provides an example of each type of amine and the name of each.
The examples provided in the diagram are the simplest possible and are named simply by indicating the number of methyl groups using a prefix: For only one attached methyl group, no prefix is used. In order to have a neutral molecular structure (and consequently a covalent compound) there must be a non-bonding pair of electrons on the Nitrogen atom! The quaternary amine polyatomic ion will have a Hydrogen ion (bare proton) or a positivly charged hydrocarbon group (a carbo-cation) attached to the lone pair of electrons.
That's all for now. As always, thank you for reading!
A Publication of http://ExcellenceInLearning.biz
This post expands upon my last post on 'An Introduction to Amines'. My last post explained that the amine functional group is -NH2. While that is a true statement, it is only part of the "story".
The -NH2 group is the functional group of a primary amine. Because of the versatile bonding of Nitrogen, two other types of amines exist; secondary and tertiary. Technically, there is a fourth type of amine (quaternary), but that form is a +1 polyatomic ion, not a neutral molecular structure. The following diagram provides an example of each type of amine and the name of each.
The examples provided in the diagram are the simplest possible and are named simply by indicating the number of methyl groups using a prefix: For only one attached methyl group, no prefix is used. In order to have a neutral molecular structure (and consequently a covalent compound) there must be a non-bonding pair of electrons on the Nitrogen atom! The quaternary amine polyatomic ion will have a Hydrogen ion (bare proton) or a positivly charged hydrocarbon group (a carbo-cation) attached to the lone pair of electrons.
That's all for now. As always, thank you for reading!
A Publication of http://ExcellenceInLearning.biz
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