A very simple qn on geometrical isomers

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SUMMARY

The discussion centers on the geometrical isomers of a compound with two double bonds, which theoretically allows for four isomers based on cis-trans configurations. However, the consensus is that the actual number of distinct geometrical isomers is three due to molecular symmetry and superimposability. The participants emphasize the importance of analyzing the symmetry of the molecule to determine the correct count of isomers.

PREREQUISITES
  • Understanding of geometrical isomers and cis-trans configurations
  • Knowledge of molecular symmetry and superimposability
  • Familiarity with double bonds in organic compounds
  • Basic concepts of stereochemistry
NEXT STEPS
  • Research the principles of molecular symmetry in organic chemistry
  • Study the concept of superimposable isomers and their implications
  • Learn about stereochemistry and its role in determining isomer counts
  • Examine examples of compounds with multiple double bonds and their isomers
USEFUL FOR

Chemistry students, organic chemists, and educators seeking to deepen their understanding of geometrical isomers and molecular symmetry.

nil1996
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Homework Statement


Can anybody explain how this compound can have 3 geometrical isomers isomers.
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Homework Equations


NO

The Attempt at a Solution


The compound contains two double bonds hence will have 2 pairs of cis-trans isomers.That means it will have four geometrical isomers.But my book says the isomers are 3.

Plz help
 
Last edited:
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What is the symmetry of the molecule?
 
Are any of the 4 you identified superimposable?
 
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