A cyclic, planar, fully-conjugated molecule with (4n+2) π electrons exhibits extra thermodynamic stability and a characteristic ring current. The Hückel rule identifies benzene (n=1), naphthalene, and heterocycles such as pyridine as…
A cyclic, planar, fully-conjugated molecule with (4n+2) π electrons exhibits extra thermodynamic stability and a characteristic ring current. The Hückel rule identifies benzene (n=1), naphthalene, and heterocycles such as pyridine as…