13.11. What are the necessary conditions for any system to be aromatic?

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    Vishal Baghel | Contributor-Level 10

    5 months ago

    The necessary conditions for a molecule to be aromatic are:

    • It should have a single cyclic cloud of delocalised n-electrons above and below the plane of the molecule.
    • It should be planar. This is because complete delocalization of n-electrons is possible only if the ring is planar to allow cyclic overlap of p-orbitals.
    • It should contain Huckel number of electrons, i.e., (4n + 2) n-electrons where n = 0, 1, 2, 3 etc.
      A molecule which does not satisfy any one or more of the above conditions is said to be non-aromatic.

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