Question

Which is most stable conformer of 2-chloroethanol?

Answer 1

Answer:

Gauche conformer is the most stable conformer of the 2-cholroethanol.

Explanation:

In the Gauche conformation of 2-cholroethanol, there is hydrogen bonding between hydrogen of -OH group and chlorine atom. The attraction forces increases the stability of the conformation. Therefore,  stability of Gauche conformation is even more than that of anti conformation of 2-cholroethanol.

Answer 2

Answer:

The Gauche conformer is the most stable of the 2-cholroethanol conformers.

Explanation:

• Gauche effect is an atypical situation where a gauche conformation (groups separated by a torsion angle of approximately 60°) is more stable than the anti conformation.
• There is hydrogen bonding between the -OH group hydrogen and the chlorine atom in the Gauche conformation of 2-cholroethanol. The conformation's stability is increased by the attraction forces. As a result, Gauche conformation is more stable than anti conformation of 2-cholroethanol.
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