Question

23 multiple choice 2 points which of the following correctly lists the conformations of cis - 1,4 - di - t - butylcyclohexane in order of increasing energy? boat < chair < twisted boat < half - chair chair < boat < twist boat < half - chair chair < twist boat < half - chair < boat twist boat < boat < chair < half - chair half - chair < chair < boat < twisted boat

Explanation:

Step1: Understand stability - energy relationship

More stable conformations have lower energy.

Step2: Analyze cyclohexane conformations

The chair conformation of cyclohexane is the most stable due to minimal angle strain and torsional strain. The twist - boat is more stable than the boat conformation as it reduces some of the torsional strain present in the boat. The half - chair is the least stable as it has significant angle and torsional strain. For cis - 1,4 - di - t - butylcyclohexane, these general stability rules for cyclohexane conformations still apply.

Answer:

chair < twist boat < boat < half - chair, so the correct option is the third one: chair < twist boat < half - chair < boat.