Total number of C-C sigma bond in phenylethene

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SUMMARY

The total number of C-C sigma bonds in phenylethene is 8, as confirmed by multiple participants in the discussion. The original poster (OP) correctly identified the structure and counted the bonds, while the textbook's claim of 12 sigma bonds is erroneous. Each single bond contains one sigma bond, and each double bond consists of one sigma bond and one pi bond, further supporting the OP's conclusion.

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  • Understanding of molecular structure and bonding in organic chemistry
  • Knowledge of sigma (σ) and pi (π) bonds
  • Familiarity with phenylethene's chemical structure
  • Basic skills in drawing and interpreting chemical diagrams
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  • Study the characteristics of sigma and pi bonds in organic compounds
  • Learn how to accurately draw and analyze molecular structures
  • Explore common errors in chemistry textbooks regarding bond counting
  • Review the principles of hybridization in carbon compounds
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Homework Statement



how many is total number of C-C sigma bond in phenylethene?


Homework Equations





The Attempt at a Solution



i have drawn the the strucutre as in the photo. i ended up getting 8 C-C sigma bond. but the ans from my book is 12. How to get 12?
 

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How many sigma (σ) bonds are in a single bond?

How sigma (σ) bonds are in a double bond?
 
ChiralWaltz said:
How many sigma (σ) bonds are in a single bond?

How sigma (σ) bonds are in a double bond?

Even after answering those questions, I don't think the OP's answer would change. I would say that the OP is correct and the book has an error.
 
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ChiralWaltz said:
How many sigma (σ) bonds are in a single bond?

How sigma (σ) bonds are in a double bond?

1 σ in single bond, 1 σ and 1 pi bond in double bond.
 
I would agree that OP is correct and that the number of C-C sigma bonds is 8.
 

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