Chapter 1.9, Problem 19CC

Interpretation Introduction

Interpretation:

The greater reactivity of cyclopropane among other cyclic compounds (four-membered, five-membered) is to be explained on the basis of their bond angles.

Concept introduction:

• The bond angle of $s{p}^3$ hybridized orbitals is ${109.5}^{\circ }$.
• The bond angles of cyclic alkane compounds cyclopropane, cyclobutane and cyclopentane are ${60}^{\circ }$, ${90}^{\circ }$ and ${120}^{\circ }$ respectively.
• The bond angles of cyclic compounds increases as the numbers of bonds constituted for ring increases.