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Is biphenyl considered to be aromatic?
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Muhammed Fatih Araz
Is biphenyl considered to be aromatic?
The two rings in biphenyl are inclined at an angle of 44° to each other because of the large steric repulsion between the ortho hydrogens on each ring.
For Hückel's rule to be applied, the molecule must be able to be planar and it must be monocyclic.
Due to the molecule not being planar, the two rings are not strongly conjugated to each other and you cannot apply Hückel's rule to the whole system. Additionally, the whole system is not monocyclic. Hückel's rule can be applied to each ring individually and they are both aromatic.
The two rings in biphenyl are inclined at an angle of 44° to each other because of the large steric repulsion between the ortho hydrogens on each ring.
For Hückel's rule to be applied, the molecule must be able to be planar and it must be monocyclic.
Due to the molecule not being planar, the two rings are not strongly conjugated to each other and you cannot apply Hückel's rule to the whole system. Additionally, the whole system is not monocyclic. Hückel's rule can be applied to each ring individually and they are both aromatic.
I think Id disagree that there isnt conjugation between the rings in biphenyl. Yes, there is more delocalization if you can force the system into planarity, but theres definitely electronic communication even in More
When you say that both the rings are inclined to each other at an angle of 44°, it is the most stable conformer you are talking of, isnt it? Just being sureMore
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The two rings in biphenyl are inclined at an angle of 44° to each other because of the large steric repulsion between the ortho hydrogens on each ring.
For Hückel's rule to be applied, the molecule must be able to be planar and it must be monocyclic.
Due to the molecule not being planar, the two rings are not strongly conjugated to each other and you cannot apply Hückel's rule to the whole system. Additionally, the whole system is not monocyclic. Hückel's rule can be applied to each ring individually and they are both aromatic.
The two rings in biphenyl are inclined at an angle of 44° to each other because of the large steric repulsion between the ortho hydrogens on each ring.
For Hückel's rule to be applied, the molecule must be able to be planar and it must be monocyclic.
Due to the molecule not being planar, the two rings are not strongly conjugated to each other and you cannot apply Hückel's rule to the whole system. Additionally, the whole system is not monocyclic. Hückel's rule can be applied to each ring individually and they are both aromatic.
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