Chapter 8, Problem 28P

Interpretation Introduction

Interpretation:The reason for much greater existence of 1,2-ethanediol in the gauche conformation as compared to 1,2-dichloroethane needs to be explained. Whether the ratio of gauche:anti conformation of 2-chloroethanol is similar to that of 1,2-dichloroethane or 1,2-ethanediol needs to be determined.

Concept Introduction:The molecular formula of organic compound represents the number of bonded atoms with their atomic symbols. The structural formula represents all the bonded atoms with chemical bonds and the arrangement of atoms in the molecule. The compounds with same molecular formula and different structural formula are called as isomers. Isomers can be classified as constitutional isomers and stereoisomers.

Conformation isomers have same bonding of atoms or group but they have different orientation of groups in three dimension due to C-C bond rotation.