why cyclopentadienyl cation not show aromaticity ?
Hello,
It does not show aromaticity,Due to the -hybridized ring carbon, cyclopentadiene (= 16) is not aromatic, as it does not possess an uninterrupted cyclic π electron cloud. If a hydride anion () is removed from the -hybridized ring carbon, the cyclopentadienyl cation is formed, and the hybridization of the -hybridized ring carbon is altered to .