Draw both chair conformations of the following cyclohexane. Circle the chair conformation that is lower in energy (more stable) and provide a brief explanation for your choice.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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**Instructions:**

Draw both chair conformations of the following cyclohexane. Circle the chair conformation that is lower in energy (more stable) and provide a brief explanation for your choice.

**Molecular Structure:**

The structure provided shows a cyclohexane ring with a propyl group (CH2CH2CH3) attached at one of the carbon atoms. The substituent is drawn with stereochemistry indicating axial positioning (bond line going down and away).

**Task Explanation:**

- **Chair Conformations:** Cyclohexane can adopt different conformations due to its flexibility. The chair conformations are the most stable due to minimized steric strain.
  
- **Axial vs Equatorial Positions:** 
  - Atoms or groups can be placed axially (parallel to the imaginary axis of the ring) or equatorially (around the equator of the ring).
  - Generally, bulky groups prefer to be in the equatorial position to minimize steric hindrance.

**Explanation Requirement:**

- Identify which conformation has the propyl group in the equatorial position.
- Explain why this conformation is more stable (lower energy), typically because of reduced steric strain or 1,3-diaxial interactions.
Transcribed Image Text:**Instructions:** Draw both chair conformations of the following cyclohexane. Circle the chair conformation that is lower in energy (more stable) and provide a brief explanation for your choice. **Molecular Structure:** The structure provided shows a cyclohexane ring with a propyl group (CH2CH2CH3) attached at one of the carbon atoms. The substituent is drawn with stereochemistry indicating axial positioning (bond line going down and away). **Task Explanation:** - **Chair Conformations:** Cyclohexane can adopt different conformations due to its flexibility. The chair conformations are the most stable due to minimized steric strain. - **Axial vs Equatorial Positions:** - Atoms or groups can be placed axially (parallel to the imaginary axis of the ring) or equatorially (around the equator of the ring). - Generally, bulky groups prefer to be in the equatorial position to minimize steric hindrance. **Explanation Requirement:** - Identify which conformation has the propyl group in the equatorial position. - Explain why this conformation is more stable (lower energy), typically because of reduced steric strain or 1,3-diaxial interactions.
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