Which of the statements below correctly describes the chair conformations of trans-1,4-dimethylcyclohexane? A. The higher energy chair conformation contains one axial methyl group and one equatorial methyl group. B. The lower energy chair conformation contains one axial methyl group and one equatorial methyl group. C. The two chair conformations are of equal energy. D. The higher energy chair conformation contains two axial methyl groups. E. The lower energy chair conformation contains two axial methyl groups.

The diaxial trans-1,4-dimethylcyclohexane has the highest energy (the least stable) and the diequatorial chair conformation has the lowest energy (the most stable).

The diaxial conformation has a higher energy due to the interaction between the methyl groups.

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Martebi Martebi · Answer 2 · 2021-11-11T20:24:17+01:00

The true statement is that the higher energy chair conformation contains two axial methyl groups.

It is stated that the conformation that takes place in the factors in equatorial will be more stable than a conformation with both in axial.

Note that when one factor is axial and the other is equatorial, the most stable conformation will be the one with the bulkiest factor in the equatorial position.

1,1-dimethylcyclohexane consist of both methyl groups are on the same ring carbon.

The 2 chair conformers have one methyl group in an axial position and one methyl group in an equatorial position bringing both the same relative stability.

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