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Why is cis-bicyclo [4.1.0]-heptane more stable than its trans isomer?
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+ Isomers
+ Chemistry
+ Organic chemistry
+ Stability
Posted by
Manoj Bhai
Why is cis-bicyclo [4.1.0]-heptane more stable than its trans isomer?
Because of the bridge without any carbons…. [0] bridge. You can picture this molecule as a “pinched” cyclohexane, where the carbons in the nor-adjacent (1,3) positions are pinched together with a 1-carbon bridge.
bicyclo [4.1.0]=heptane or norcarane is stable in the “boat” (cis-) configuration, because of the bridge. The chair conformation induces too much torsional strain on the C-C bonds involved.
Because of the bridge without any carbons…. [0] bridge. You can picture this molecule as a “pinched” cyclohexane, where the carbons in the nor-adjacent (1,3) positions are pinched together with a 1-carbon bridge.
bicyclo [4.1.0]=heptane or norcarane is stable in the “boat” (cis-) configuration, because of the bridge. The chair conformation induces too much torsional strain on the C-C bonds involved.
Because of the bridge without any carbons…. [0] bridge. You can picture this molecule as a “pinched” cyclohexane, where the carbons in the nor-adjacent (1,3) positions are pinched together with a 1-carbon bridge.
bicyclo [4.1.0]=heptane or norcarane is stable in the “boat” (cis-) configuration, because of the bridge. The chair conformation induces too much torsional strain on the C-C bonds involved.
Because of the bridge without any carbons…. [0] bridge. You can picture this molecule as a “pinched” cyclohexane, where the carbons in the nor-adjacent (1,3) positions are pinched together with a 1-carbon bridge.
bicyclo [4.1.0]=heptane or norcarane is stable in the “boat” (cis-) configuration, because of the bridge. The chair conformation induces too much torsional strain on the C-C bonds involved.
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You cannot have a trans (E) alkene in any ring smaller than 7.
Rings 8 carbons or larger can accommodate that geometry.
You cannot have a trans (E) alkene in any ring smaller than 7.
Rings 8 carbons or larger can accommodate that geometry.
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