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What are the necessary conditions for any system to be aromatic ? |
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Answer» SOLUTION :The necessary conditions for a molecule to be aromatic are : (i)It should have a single CYCLIC cloud of delocalised `pi`-electrons above and below the plane of the molecule. (ii)It should be planar . This is because complete delocalization of `pi`-electrons is possible only if the ring is planar to allow cyclic overlap of p-orbials. (III)It should contain Huckel number of electrons, i.e., (4n+2) `pi`-ELECTRONSWHERE 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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