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Which of these factors does not govern the stability of a conformation in acyclic compounds? (1) Angle strain (2) Torsional strain (3) Electrostatic forces of interaction (4) Steric interactions

1. Angle strain
2. Torsional strain
3. Electrostatic forces of interaction
4. Steric interactions

Correct answer: Torsional strain

Solution

Torsional strain specifically refers to the resistance to rotation about a bond due to eclipsing interactions, which is less relevant in acyclic compounds where rotation is generally more free. In contrast, angle strain, electrostatic forces, and steric interactions are more significant in determining the stability of acyclic structures.

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