ABC26OR0061 · General Organic Chemistry
Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: General Organic Chemistry – General · Exam: CSIR-NET JUNE 2019 · Marks: 2 · Difficulty: Medium
In the following equilibrium, conformer B is more stable than A when R is 
(a)Me
(b)F
(c)CI
(d)OMe
Answer
Answer (as printed): B
Explanation
Energy of σ (C-H) and σ* (C-F) lies comparatively lower in energy when compared to Me, Cl and OMe. Thus conformer B is more stable than A when R is F.
Explanation as extracted from the printed page; notation may be imperfect.