Molecules with this property generally show a high degree of unsaturation, but prefer substitution reactions to addition reactions.
In NMR, the nucleus independent chemical shift is used as a reference when working with molecules that exhibit this property. Also in NMR, molecules with this property exhibit a diamagnetic ring current. If half the vertices of a molecule's structure lie fully in the lower half of a Frost circle, it will have this property, which corresponds to no occupation of antibonding molecular orbitals. Molecules with this property generally show a high degree of unsaturation, but prefer substitution reactions to addition reactions. A molecule is said to have this property if it contains a fully-conjugated cyclic system. Four n plus two pi electrons is one criteria for this property put forth by Huckel. For 10 points, name this property of molecules like benzene, which exhibit unusual stability.
In NMR, the nucleus independent chemical shift is used as a reference when working with molecules that exhibit this property.
aromaticity [or word forms]