Alkene vs Alkyne: Hydrocarbon Bonding

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Discussion Overview

The discussion revolves around the classification of hydrocarbons, specifically addressing whether a hydrocarbon containing both double and triple bonds should be classified as an alkene, an alkyne, or both. Additionally, participants explore the nature of aromatic hydrocarbons and their bonding characteristics.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants propose that a hydrocarbon with both double and triple bonds should be considered both an alkene and an alkyne.
  • Others agree with this classification, reiterating that it encompasses both types of bonds.
  • One participant questions the existence of an aromatic ring with all single bonds, asserting that aromaticity requires overlapping p orbitals, which implies the presence of double bonds.
  • A later reply echoes this sentiment, emphasizing that aromatic compounds cannot consist solely of single bonds.

Areas of Agreement / Disagreement

Participants generally agree that a hydrocarbon with both double and triple bonds can be classified as both an alkene and an alkyne. However, there is disagreement regarding the possibility of an aromatic ring with all single bonds, with some asserting it cannot exist due to the requirements of aromaticity.

Contextual Notes

The discussion does not resolve the implications of classifying hydrocarbons with mixed bonding types, nor does it clarify the definitions of aromaticity in relation to bonding. There are also assumptions regarding the definitions of alkenes and alkynes that remain unexamined.

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Would a hydrocarbon with both double and triple bonds be considered just an alkyne...or both an alkene and alkyne?
 
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Both an alkene and an alkyne.
 
Ygggdrasil said:
Both an alkene and an alkyne.

Thanks. Also, is an aromatic ring hydrocarbon with all single bonds considered saturated?
 
I don't think there is such a thing as an aromatic ring with all single bonds. One of the requirements for aromaticity is each atom having overlapping p orbitals on both sides, which results in double bonds.

So short answer, no.
 
pzona said:
I don't think there is such a thing as an aromatic ring with all single bonds. One of the requirements for aromaticity is each atom having overlapping p orbitals on both sides, which results in double bonds.

So short answer, no.

Thanks for the reply.
 

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