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2. Circle the compound that would have the lowest energy at its most stable conformation and box the compound that would have the highest energy at its most stable conformation. 호호호호

2. Circle the compound that would have the lowest energy at its most stable conformation and box the compound that would have the highest energy at its most stable conformation. 호호호호

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Understanding Conformational Stability **Objective:** Determine which compound has the lowest energy at its most stable conformation and which one has the highest energy. **Question:** 2. Circle the compound that would have the lowest energy at its most stable conformation and box the compound that would have the highest energy at its most stable conformation. **Structural Diagrams:** Below are four structural diagrams of cyclohexane derivatives. Each structure exhibits different substituent positions, either axial or equatorial. 1. **First Structure:** - One methyl group in the equatorial position. - Another methyl group in the axial position. - A third methyl group in the axial position, opposite the first. 2. **Second Structure:** - One methyl group in the equatorial position. - Another methyl group in the equatorial position. - A third methyl group in the axial position. 3. **Third Structure:** - One methyl group in the equatorial position. - Another methyl group in the axial position. - A third methyl group in the equatorial position, opposite the first. 4. **Fourth Structure:** - One methyl group in the axial position. - Another methyl group in the axial position, opposite the first. - A third methyl group in the axial position. ### Detailed Analysis: - In the **first structure**, two large groups are in the unfavorable axial positions, leading to high steric strain. - In the **second structure**, two large groups take the more favorable equatorial positions, reducing steric strain. - In the **third structure**, there is less steric hindrance due to the axial-equatorial positioning. - In the **fourth structure**, three large groups are in axial positions, significantly increasing steric strain and energy. ### Conclusion: - **Circle** the **second structure** as it has the lowest energy conformation due to minimized steric hindrance. - **Box** the **fourth structure** as it has the highest energy conformation due to maximum steric strain.
Transcribed Image Text:### Understanding Conformational Stability **Objective:** Determine which compound has the lowest energy at its most stable conformation and which one has the highest energy. **Question:** 2. Circle the compound that would have the lowest energy at its most stable conformation and box the compound that would have the highest energy at its most stable conformation. **Structural Diagrams:** Below are four structural diagrams of cyclohexane derivatives. Each structure exhibits different substituent positions, either axial or equatorial. 1. **First Structure:** - One methyl group in the equatorial position. - Another methyl group in the axial position. - A third methyl group in the axial position, opposite the first. 2. **Second Structure:** - One methyl group in the equatorial position. - Another methyl group in the equatorial position. - A third methyl group in the axial position. 3. **Third Structure:** - One methyl group in the equatorial position. - Another methyl group in the axial position. - A third methyl group in the equatorial position, opposite the first. 4. **Fourth Structure:** - One methyl group in the axial position. - Another methyl group in the axial position, opposite the first. - A third methyl group in the axial position. ### Detailed Analysis: - In the **first structure**, two large groups are in the unfavorable axial positions, leading to high steric strain. - In the **second structure**, two large groups take the more favorable equatorial positions, reducing steric strain. - In the **third structure**, there is less steric hindrance due to the axial-equatorial positioning. - In the **fourth structure**, three large groups are in axial positions, significantly increasing steric strain and energy. ### Conclusion: - **Circle** the **second structure** as it has the lowest energy conformation due to minimized steric hindrance. - **Box** the **fourth structure** as it has the highest energy conformation due to maximum steric strain.
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