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We start with ammonia, NH3. If one hydrogen atom has been replaced we have a primary amine, RNH2. If the R group is an alkyl group we have an aliphatic amine. If the N is directly attached to a benzene ring we have an arylamine. |
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If two hydrogen atoms have been replaced a secondary amine results. |
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With all three hydrogen atoms replaced we have a tertiary amine. |
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It is also possible to have four alkyl groups attached to the nitrogen atom by using a dative bond from the nitrogen atom. This gives the nitrogen atom a positive charge, and we have a quaternary ammonium salt. |
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