DanielDaniels
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Which structure/isomer is more stable?

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I am confused between the first one and whether they all have the same stability. I don't have a scientific reasoning, but rather a slight guess about the distribution of electron density.
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username913907
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(Original post by Daniel Atieh)
Which structure/isomer is more stable?

Image

I am confused between the first one and whether they all have the same stability. I don't have a scientific reasoning, but rather a slight guess about the distribution of electron density.
Top left. Can't remember the reason behind it off the top of my head but the most substituted alkene is generally the lowest in energy.
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Infraspecies
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The most substituted alkene is generally most stable (a hyper conjugation effect between the sp2 and sp3 centres, the respective LUMO and HOMO if you wanted to know), but you also need to consider the strain factors the sp2 hybridisation bring the the shapes of the rings.
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