The reason for the difference between the barrier for inversion at nitrogen for alkyl- and arylamines is to be given. Concept introduction: The nitrogen atom in amines is trivalent and carries an unshared pair of electrons. In an amine group, the nitrogen atom is sp 3 hybridized, that is, it has four sp 3 hybrid orbitals. In primary amines, two sp 3 hybridized orbitals of nitrogen atom overlap with the s orbitals of hydrogen atoms to form two N – H sigma bonds.

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Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The reason for the difference between the barrier for inversion at nitrogen for alkyl- and arylamines is to be given.

Concept introduction:

The nitrogen atom in amines is trivalent and carries an unshared pair of electrons.

In an amine group, the nitrogen atom is sp3 hybridized, that is, it has four sp3 hybrid orbitals.

In primary amines, two sp3 hybridized orbitals of nitrogen atom overlap with the s orbitals of hydrogen atoms to form two N–H sigma bonds.

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