Question:

Which of the following compound is the most basic ?

Updated On: Apr 23, 2024
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The Correct Option is B

Solution and Explanation

Compound is most basic due to localised lone pair of electrons on nitrogen atom While in other compounds, because of resonance, the lone pair of electrons on nitrogen atom gets delocalised over benzene ring and thus is less easily available for donation.
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Concepts Used:

Structure of Amines

The structure of Amines is shown below:

Alkyl Amines:

Alkylamines consist of tetrahedral nitrogen centers where the C-N-H and C-N-C bond angle is 109°. The distance between C-N bonds is smaller in comparison to the C-C range. The amines can also display a chiral property wherein the center of the nitrogen atom holds for replacements which creates solo pairs.

The bond angle in the case of trimethylamine is 108° which results in the Pyramidal structure of trimethylamine-

Aromatic Amine:

Due to the mixture of the solo pair with the aryl substituent, nitrogen nearly has a planar structure in aromatic amines. The C-N range is very short. In aniline, the distance between C-N bonds is similar to the distance between C-C bonds.

Read More: Structure of Amines