# Plz explain me clearly how to find out that the given compound is antiaromatic or nonaromatic or aromatic....I am not even getting from the above mentioned answers ..so plzzz someone guide it more clearly?

Aug 28, 2016

In general a compound is described as aromatic if it has $6$ (i.e. $4 n + 2$) $\pi$ electrons constrained in a ring. Such an arrangement confers a special stability. Benzene meets this criterion, as does toluene, as do heterocyclic bases such as pyrrole, i.e. ${C}_{4} {H}_{5} N$, or furan, ${C}_{4} {H}_{4} O$.
Tub-shaped $\text{Cyclo-octatetraene}$ may be reduced to the planar $\text{cyclo-octatetraenyl dianion} , {C}_{8} {H}_{8}^{2 -}$, by reducing the tetraene with potassium. Does this meet the aromatic criterion?