Chapter 8, Problem 112P

Interpretation Introduction

Interpretation: The reason for the Cyclobutadiene is rectangular has to be predicted.

Concept Introduction:

Criteria for Aromaticity:

1. 1. A molecule must be cyclic.
2. 2. Every atom in the ring must have a p-orbital.
3. 3. The molecule must be planar.
4. 4. $\text{π-}$ Cloud must contain an odd number of pairs of $\text{π-electrons}\text{.}$