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
Chapter22: Organic And Biological Molecules
Section: Chapter Questions
Problem 6RQ: Distinguish between isomerism and resonance. Distinguish between structural and geometric isomerism....
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Question
These two products are
a. diastereomers
b. constitutional isomers
c. identical
![On an Educational website:
**Structural Isomers in Alkenes**
The diagram above illustrates two structural isomers of 2-butene:
1. **Cis-2-butene (left side of the image)**:
- In this structure, the double bond between the two carbon atoms ensures that the substituents around it cannot rotate freely. The hydrogen (H) atom and bromine (Br) atom are on the same side of the double bond.
- Structure: \( \text{Br-CH} = \text{C(CH}_3\text{)} - \text{H} \)
2. **Trans-2-butene (right side of the image)**:
- Here, the double bond between the carbon atoms still remains, but the substituents around the bond differ from the cis-isomer. The hydrogen (H) atom and bromine (Br) atom are on the opposite sides of the double bond.
- Structure: \( \text{H-CH} = \text{C(CH}_3\text{) - \text{Br} ) \)
These structural isomers depict an important concept in organic chemistry — geometric (cis/trans) isomerism. This type of isomerism is especially relevant in compounds that contain carbon-carbon double bonds, where the spatial arrangement of substituents can vary, leading to different physical and chemical properties.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F62f6355a-05e6-4234-9d59-a73a1309b418%2F56c805dc-f728-4e97-bdf8-bcdbf5a926a6%2F81tgdt8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:On an Educational website:
**Structural Isomers in Alkenes**
The diagram above illustrates two structural isomers of 2-butene:
1. **Cis-2-butene (left side of the image)**:
- In this structure, the double bond between the two carbon atoms ensures that the substituents around it cannot rotate freely. The hydrogen (H) atom and bromine (Br) atom are on the same side of the double bond.
- Structure: \( \text{Br-CH} = \text{C(CH}_3\text{)} - \text{H} \)
2. **Trans-2-butene (right side of the image)**:
- Here, the double bond between the carbon atoms still remains, but the substituents around the bond differ from the cis-isomer. The hydrogen (H) atom and bromine (Br) atom are on the opposite sides of the double bond.
- Structure: \( \text{H-CH} = \text{C(CH}_3\text{) - \text{Br} ) \)
These structural isomers depict an important concept in organic chemistry — geometric (cis/trans) isomerism. This type of isomerism is especially relevant in compounds that contain carbon-carbon double bonds, where the spatial arrangement of substituents can vary, leading to different physical and chemical properties.
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