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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Question
Which are enantiomers?
Transcribed Image Text:### Question:
Identify the pairs of the following molecules that are enantiomers:
A) a) Only 1 and 2
B) b) Only 2 and 3
C) c) Only 3 and 1
D) d) none
### Diagrams:
**Molecule I:**
- Central carbon atom with four different groups: Br, H, CH₃ (methyl group), and another H.
- Bromine (Br) is represented with a solid wedge, indicating it is coming out of the plane, and one hydrogen (H) with a dashed line, indicating it is going into the plane.
**Molecule II:**
- Central carbon atom with four different groups: Br, H, CH₃ (methyl group), and another H.
- Bromine (Br) is represented with a dashed line, indicating it is going into the plane, and one hydrogen (H) with a solid wedge, indicating it is coming out of the plane.
**Molecule III:**
- Central carbon atom with four different groups: Br, H, CH₃ (methyl group), and another H.
- Methyl group (CH₃) is represented with a solid wedge, indicating it is coming out of the plane, while bromine (Br) is with a dashed line, indicating it is going into the plane.
Expert Solution
Step 1
Explanation-
In above molecule 1 ,2 ,3 none of the molecules are enantiomers of each other .
Enantiomers or optical isomers are chiral molecules which are non-superimposable mirror images of each other.
1) RS configuration of molecule 1 and 2 are different and they have no mirror images, so they are diasteromers of each other .
1) RS configuration of molecule 2 and 3 are same and they have superimposable mirror images of each other so they are identical of each other .
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