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Given the planar trisubstituted cyclohexane, fill in the missing substituents (with H or Cl) to complete the two possible cyclohexane chair conformations. Then, determine the more stable conformer. You might find it helpful to make a model of the cyclohexane to help visualize the chair conformations. & Br H. H H H H H Chair 1 Br chair flip Answer Bank H F H H H. H H H Chair 2

Given the planar trisubstituted cyclohexane, fill in the missing substituents (with H or Cl) to complete the two possible cyclohexane chair conformations. Then, determine the more stable conformer. You might find it helpful to make a model of the cyclohexane to help visualize the chair conformations. & Br H. H H H H H Chair 1 Br chair flip Answer Bank H F H H H. H H H Chair 2

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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**Cyclohexane Chair Conformations: Understanding Stability and Substituents** To enhance your knowledge of cyclohexane chair conformations, let’s explore a given planar trisubstituted cyclohexane and work through completing the two possible chair conformations. Following this, we will determine the more stable conformer. It is recommended to utilize a model of cyclohexane for a better grasp of the chair conformations. ### Exercise Overview: The given molecule is a trisubstituted cyclohexane with Chlorine (Cl), Bromine (Br), and Fluorine (F) substituents. #### Objective: 1. Complete the missing substituents (with H or Cl). 2. Determine the more stable conformer. ### Molecular Structure: **Planar Cyclohexane Structure:** - The cyclohexane ring is depicted with three substituents: - Cl (Chlorine) - F (Fluorine) - Br (Bromine) **Chair Conformations:** Visualize two chair conformations labeled Chair 1 and Chair 2. **Chair 1 and Chair 2:** - **Chair 1 Diagram:** The first chair conformation shows the cyclohexane ring in a 3D chair form with several hydrogen (H) atoms marked. There are also several positions where substituents are missing. - **Chair 2 Diagram:** A mirrored chair form of Chair 1 is depicted, indicating a 'chair flip.' Similar to Chair 1, this structure has several hydrogen atoms with a few positions requiring substitutions. **Answer Bank:** An answer bank containing four substituents is provided: - Br (Bromine) - H (Hydrogen) - F (Fluorine) - Cl (Chlorine) ### Completing the Chair Conformations: 1. **Identify Substituents’ Axial and Equatorial Positions:** - On the cyclohexane chair forms, substituents can occupy either axial (vertical) or equatorial (horizontal) positions. - Determine where each substituent (Cl, Br, F) and hydrogen atoms (H) should be placed in both Chair 1 and Chair 2 conformations. 2. **Chair Flip Concept:** - The chair flip involves an inversion of axial and equatorial positions. - Substituents on axial positions in Chair 1 will
Transcribed Image Text:**Cyclohexane Chair Conformations: Understanding Stability and Substituents** To enhance your knowledge of cyclohexane chair conformations, let’s explore a given planar trisubstituted cyclohexane and work through completing the two possible chair conformations. Following this, we will determine the more stable conformer. It is recommended to utilize a model of cyclohexane for a better grasp of the chair conformations. ### Exercise Overview: The given molecule is a trisubstituted cyclohexane with Chlorine (Cl), Bromine (Br), and Fluorine (F) substituents. #### Objective: 1. Complete the missing substituents (with H or Cl). 2. Determine the more stable conformer. ### Molecular Structure: **Planar Cyclohexane Structure:** - The cyclohexane ring is depicted with three substituents: - Cl (Chlorine) - F (Fluorine) - Br (Bromine) **Chair Conformations:** Visualize two chair conformations labeled Chair 1 and Chair 2. **Chair 1 and Chair 2:** - **Chair 1 Diagram:** The first chair conformation shows the cyclohexane ring in a 3D chair form with several hydrogen (H) atoms marked. There are also several positions where substituents are missing. - **Chair 2 Diagram:** A mirrored chair form of Chair 1 is depicted, indicating a 'chair flip.' Similar to Chair 1, this structure has several hydrogen atoms with a few positions requiring substitutions. **Answer Bank:** An answer bank containing four substituents is provided: - Br (Bromine) - H (Hydrogen) - F (Fluorine) - Cl (Chlorine) ### Completing the Chair Conformations: 1. **Identify Substituents’ Axial and Equatorial Positions:** - On the cyclohexane chair forms, substituents can occupy either axial (vertical) or equatorial (horizontal) positions. - Determine where each substituent (Cl, Br, F) and hydrogen atoms (H) should be placed in both Chair 1 and Chair 2 conformations. 2. **Chair Flip Concept:** - The chair flip involves an inversion of axial and equatorial positions. - Substituents on axial positions in Chair 1 will
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