1) Use conformations A and B shown below to answer the following questions. Br. H Br H H H H H H CI Conformation A Conformation B Newman projection conformation A a) In the space to the right above, draw a Newman projection looking down the carbon-carbon bond of conformation A. Part of the Newman projection has been drawn for you. b) Which conformation would be more stable (A or B)? c) Which conformation has greater steric strain? (A or B)? d) Circle all the terms that accurately describe conformation A. STAGGERED ECLIPSED GAUCHE ANTI e) Circle all the terms that accurately describe conformation B. STAGGERED ECLIPSED GAUCHE ΑΝΤΙ

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**Organic Chemistry: Conformations and Newman Projections**

1. Use conformations A and B shown below to answer the following questions.

   ![Conformation A](conformation-A)  ![Conformation B](conformation-B)

   **Conformation A:** 
   - Bromine (Br) and Hydrogen (H) are on the left.
   - Chlorine (Cl) and two Hydrogens (H) are on the right.

   **Conformation B:** 
   - Bromine (Br) and two Hydrogens (H) are on the left.
   - Chlorine (Cl) and Hydrogen (H) are on the right.

   A Newman projection for Conformation A is partially drawn alongside.

   **a)** Draw a Newman projection looking down the carbon-carbon bond of Conformation A. Part of the Newman projection has been drawn for you.

   **b)** Which conformation would be more stable (A or B)? ___________

   **c)** Which conformation has greater steric strain? (A or B)? ___________

   **d)** Circle all the terms that accurately describe conformation A:
   - STAGGERED
   - ECLIPSED
   - GAUCHE
   - ANTI

   **e)** Circle all the terms that accurately describe conformation B:
   - STAGGERED
   - ECLIPSED
   - GAUCHE
   - ANTI

**Explanation of Newman Projection Diagram:**
- The partially drawn Newman projection on the right represents the view down the carbon-carbon bond in Conformation A, showing relative positions of substituents on the front and rear carbon atoms.
- In this exercise, students are asked to complete the projection and assess stability and steric interactions of the given conformations.
Transcribed Image Text:**Organic Chemistry: Conformations and Newman Projections** 1. Use conformations A and B shown below to answer the following questions. ![Conformation A](conformation-A) ![Conformation B](conformation-B) **Conformation A:** - Bromine (Br) and Hydrogen (H) are on the left. - Chlorine (Cl) and two Hydrogens (H) are on the right. **Conformation B:** - Bromine (Br) and two Hydrogens (H) are on the left. - Chlorine (Cl) and Hydrogen (H) are on the right. A Newman projection for Conformation A is partially drawn alongside. **a)** Draw a Newman projection looking down the carbon-carbon bond of Conformation A. Part of the Newman projection has been drawn for you. **b)** Which conformation would be more stable (A or B)? ___________ **c)** Which conformation has greater steric strain? (A or B)? ___________ **d)** Circle all the terms that accurately describe conformation A: - STAGGERED - ECLIPSED - GAUCHE - ANTI **e)** Circle all the terms that accurately describe conformation B: - STAGGERED - ECLIPSED - GAUCHE - ANTI **Explanation of Newman Projection Diagram:** - The partially drawn Newman projection on the right represents the view down the carbon-carbon bond in Conformation A, showing relative positions of substituents on the front and rear carbon atoms. - In this exercise, students are asked to complete the projection and assess stability and steric interactions of the given conformations.
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