Chapter 18.4, Problem 8CC

Interpretation Introduction

Interpretation For the given compounds, it should be checked whether they are aromatic or not

Concept introduction:

• The requirement of an odd number of electron pair is called Huckel’s rule. A compound can only be aromatic if the number of $\text{π}$ electron in the ring is 2, 6,10,14,18 and so on. This series of number can be expressed mathematically as $\text{4n+2}$, where n should be an integer and the compound is aromatic.
• Each $\text{π}$ bond count as two $\text{π}$ electron and lone pair also count as two $\text{π}$ electron