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The following structure can exist in two possible "chair" conformations. Draw them and analyze the difference n their energies. Ме .H Me,

The following structure can exist in two possible "chair" conformations. Draw them and analyze the difference n their energies. Ме .H Me,

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Understanding Cyclohexane "Chair" Conformations: An Analysis** The given cyclohexane structure can exist in two different "chair" conformations due to the rotation around single bonds. This structure contains substituents: two methyl groups (Me) and a hydrogen atom (H). **Structure Analysis:** - The cyclohexane ring can flip from one chair conformation to another, influencing the axial and equatorial positions of the substituents. - Each conformation will have different energy levels based on the steric hindrance and torsional strain experienced by these substituents. **Chair Conformations:** 1. **Conformation A:** - In this scenario, assume one methyl group is axial while the other is equatorial. 2. **Conformation B:** - Upon flipping, the previously axial methyl group becomes equatorial and vice versa for the other one. **Energy Considerations:** - Equatorial positions are generally more stable due to reduced steric hindrance compared to axial positions. - Conformation with larger groups in equatorial positions will typically be lower in energy and more stable. **Conclusion:** - Students should draw both possible chair conformations to visualize the changes in axial/equatorial positions. - Analyze which conformation is more stable by considering the orientation of the methyl groups and compare their energies.
Transcribed Image Text:**Understanding Cyclohexane "Chair" Conformations: An Analysis** The given cyclohexane structure can exist in two different "chair" conformations due to the rotation around single bonds. This structure contains substituents: two methyl groups (Me) and a hydrogen atom (H). **Structure Analysis:** - The cyclohexane ring can flip from one chair conformation to another, influencing the axial and equatorial positions of the substituents. - Each conformation will have different energy levels based on the steric hindrance and torsional strain experienced by these substituents. **Chair Conformations:** 1. **Conformation A:** - In this scenario, assume one methyl group is axial while the other is equatorial. 2. **Conformation B:** - Upon flipping, the previously axial methyl group becomes equatorial and vice versa for the other one. **Energy Considerations:** - Equatorial positions are generally more stable due to reduced steric hindrance compared to axial positions. - Conformation with larger groups in equatorial positions will typically be lower in energy and more stable. **Conclusion:** - Students should draw both possible chair conformations to visualize the changes in axial/equatorial positions. - Analyze which conformation is more stable by considering the orientation of the methyl groups and compare their energies.
Expert Solution
Step 1

The given compound can exist in two conformations. 

1. CH3 at axial position

2. CH3 is equatorial position.

alkyl groups on equatorial position given more stable coformation because there is no repulsions.

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