Why is gauche more stable than anti in ethylene glycol?

– Gauche conformation:- the rotation of the eclipsed conformation at 60 degrees, results in the gauche conformation. Normally, its second most stable form after the anti but in some cases due to the intermolecular hydrogen bonding ,it is more stable than the anti.

Is gauche more stable than anti?

The gauche form is less stable than the anti form due to steric hindrance between the two methyl groups but still is more stable than the eclipsed formations.

Why is ethylene glycol gauche conformation Favoured?

Ethylene glycol is most stable in the gauche conformation because of intramolecular hydrogen bonding between two OH group. The molecules in which there are no hydrogen bond forming group then anti form will be the most stable due to least strain.

Which conformation of ethylene glycol is more stable?

Solution : due to intramolecular H-bonding gauche is most stable.

In which compound gauche form has less potential energy than anti form?

In butane the gauche-conformer is less stable than the anti-conformer by about 0.9 kcal/mol. This is due to a crowding of the two methyl groups in the gauche structure, and is called steric strain or steric hindrance.

Which of the following confirmation has highest stability?

Correct answer is (b) Chair conformation

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In which of the following gauche form is more stable than anti form?

In the study of conformational isomerism, the 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 (180°).

In which of the following compound anti form is more stable than gauche form?

(C) 1,2 -Dichloroethane.

Which of the following compounds has have gauche form more stable than anti form?

The guache conformation of ethylene glycol is more stable than its anti conformation Statement-2.

What is the gauche conformation?

Gauche: The relationship between two atoms or groups whose dihedral angle is more than 0o (i.e., eclipsed) but less than 120o (i.e., the next eclipsed conformation). A conformation which has one or more gauche interactions is can be called a gauche conformation.

Which form of ethylene glycol is most stable?

Gauche conformer in the most stable because of the internal hydrogen bonding between the two OH groups. Hence the correct option is C.

  • Assertion.
  • In which of the following gauche form is more stabe than anti form of conformers?
  • With respect to the conformers of ethane, which of the following statement is true?
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