Introduction

Cyclohexanediol is a compound consisting of two hydroxyl groups (-OH) attached to a cyclohexane ring. The stability of a cyclohexanediol compound is influenced by the arrangement of the hydroxyl groups on the cyclohexane ring. In this case, we have four different isomers of cyclohexanediol: cis 1-2, trans 1-2, cis 1-3, and trans 1-3. Among these isomers, the most stable one can be determined by examining the arrangement of the hydroxyl groups.

Stability of Cyclohexanediol Isomers

1. Cis 1-2 Cyclohexanediol:
- In this isomer, both hydroxyl groups are located on the same side of the cyclohexane ring.
- The close proximity of the two hydroxyl groups can lead to steric hindrance, which destabilizes the molecule.
- The steric hindrance between the two hydroxyl groups makes this isomer less stable compared to others.

2. Trans 1-2 Cyclohexanediol:
- In this isomer, the hydroxyl groups are located on opposite sides of the cyclohexane ring.
- The trans arrangement allows for a greater separation between the hydroxyl groups, reducing steric hindrance.
- The absence of steric hindrance makes this isomer more stable than cis 1-2 cyclohexanediol.

3. Cis 1-3 Cyclohexanediol:
- In this isomer, one hydroxyl group is located on one side of the cyclohexane ring, while the other is on the adjacent carbon.
- The proximity of the hydroxyl groups in this arrangement can lead to steric hindrance, similar to cis 1-2 cyclohexanediol.
- The steric hindrance between the hydroxyl groups makes this isomer less stable compared to trans 1-2 cyclohexanediol.

4. Trans 1-3 Cyclohexanediol:
- In this isomer, one hydroxyl group is located on one side of the cyclohexane ring, while the other is on the opposite side.
- The trans arrangement allows for a greater separation between the hydroxyl groups, reducing steric hindrance.
- The absence of steric hindrance makes this isomer more stable than cis 1-3 cyclohexanediol.

Conclusion

Among the four isomers of cyclohexanediol, the most stable one is trans 1-2 cyclohexanediol. This isomer has a trans arrangement of hydroxyl groups, which allows for a greater separation between them, minimizing steric hindrance. The absence of steric hindrance contributes to the stability of trans 1-2 cyclohexanediol, making it the most stable isomer among the given options.

Answer kya hai? Is it D?