Aromaticity and π Molecular Orbitals

butadiene cyclopentadienyl anion cyclobutadiene cyclopropyl cation cycloheptatrienyl cation

Click the structures in turn and then the orbital levels to view the 3D models and molecular orbitals respectively
The calculated energy of the molecular orbital is shown in the top left corner.
• Observe the degeneracy of pairs of molecular orbitals.
• Increasing number of nodes corresponds to increasing energy.

Provided by the