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Introductory Chemistry: An Active Learning Approach
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter22: Biochemistry
Section: Chapter Questions
Problem 22.4TC
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**Question:** What is the correct structure for (2S,5R)-2-fluoro-5-methylnonane? **Structures:** **I** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a wedge bond (indicating it is coming out of the plane of the paper) and a methyl group (CH3) attached to the fifth carbon (C5) with a wedge bond. **II** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a dashed bond (indicating it is going into the plane of the paper) and a methyl group (CH3) attached to the fifth carbon (C5) with a dashed bond. **III** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a wedge bond and a methyl group (CH3) attached to the fifth carbon (C5) with a dashed bond. **IV** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a dashed bond and a methyl group (CH3) attached to the fifth carbon (C5) with a wedge bond. **Options:** - ⃝ I - ⃝ III - ⃝ II - ⃝ IV **Explanation of Graphs/Diagrams:** Each diagram represents a structural formula of (2S,5R)-2-fluoro-5-methylnonane. The structures show a linear chain of nine carbon atoms (nonane) with specific spatial (stereoisomer) orientations of the functional groups: - **Wedge Bond (solid triangle):** Indicates the group is coming out of the plane of the paper (towards the viewer). - **Dashed Bond (dashed triangle):** Indicates the group is going into the plane of the paper (away from the viewer). In the context of the question, stereochemistry is important in determining the correct 3D configuration of the molecule in terms of the (2S,5R) configuration. **Answer:** The correct answer is ⃝ III.
Transcribed Image Text:**Question:** What is the correct structure for (2S,5R)-2-fluoro-5-methylnonane? **Structures:** **I** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a wedge bond (indicating it is coming out of the plane of the paper) and a methyl group (CH3) attached to the fifth carbon (C5) with a wedge bond. **II** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a dashed bond (indicating it is going into the plane of the paper) and a methyl group (CH3) attached to the fifth carbon (C5) with a dashed bond. **III** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a wedge bond and a methyl group (CH3) attached to the fifth carbon (C5) with a dashed bond. **IV** - A linear nonane chain with a fluorine atom (F) attached to the second carbon (C2) with a dashed bond and a methyl group (CH3) attached to the fifth carbon (C5) with a wedge bond. **Options:** - ⃝ I - ⃝ III - ⃝ II - ⃝ IV **Explanation of Graphs/Diagrams:** Each diagram represents a structural formula of (2S,5R)-2-fluoro-5-methylnonane. The structures show a linear chain of nine carbon atoms (nonane) with specific spatial (stereoisomer) orientations of the functional groups: - **Wedge Bond (solid triangle):** Indicates the group is coming out of the plane of the paper (towards the viewer). - **Dashed Bond (dashed triangle):** Indicates the group is going into the plane of the paper (away from the viewer). In the context of the question, stereochemistry is important in determining the correct 3D configuration of the molecule in terms of the (2S,5R) configuration. **Answer:** The correct answer is ⃝ III.
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