Chapter 26.2B, Problem 26.4P

Interpretation Introduction

Interpretation: The reason for addition of isobutylene molecules do not occurs at the opposite position in its cationic polymerisation with ${\text{BF}}_3$ is to be explained.

Concept Introduction: Cationic polymerisation is the polymerisation in which the reaction of formation of polymer proceeds through the formation of cation. The formation of polymer in this type of polymerisation totally depends upon the stability of cation formed in the polymerisation reaction.

To determine: The reason for no isobutyl molecules adds to opposite orientation in the polymerisation reaction.