Gauch or skew conformation is more stable than the anti because of the intramolecular hydrogen bonding which is geometrically possible only in the gauch conformation.
For examples:
Ethane-1,2-diol, 2-Fluoroethan-1-ol, 2-chloroethan-1-ol and 2-Aminoethanol etc.
2-chloroethane-1-ol:
2-chloroethane-1-ol:
Ethane-1,2-diol:
Realated Questions:
How many cyclic isomers possible of (C6H12) Hexene?
How many cyclic isomers possible of (C5H10) pentene?
Write the major and minor product of hydration of 1-Methylcyclopent-1-ene in acidic medium?
Why enol form of Beta Dicarbonyl compound more stable than those of monocarbonyl compounds?
Why enol form of phenol is more stable than its keto isomers?
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