Organic Chemistry
Improve your experience by picking them
The unpaired electron in hepta-1,3,5-trienyl radical is delocalized over four carbon atoms. Draw the resonance forms to illustrate how the unpaired electron is shared among these four carbon atoms.
The positive charge in pentadienyl cation is delocalized over three carbon atoms.
(a) Draw the molecular orbitals of pentadienyl cation in order of increasing energy.
(b) How many nodes are present in the lowest and the highest energy molecular orbitals?
Consider the anion shown below:
Draw the molecular orbital diagram and the resonance structures to show the delocalization of the lone pair onto three carbon atoms.
Consider the cation shown below:
Show which carbon atoms share the positive charge using resonance structures. Does the molecular orbital picture agree with the resonance structures?
Show which carbon atoms share the negative charge using resonance structures. Does the molecular orbital picture agree with the resonance structures?
Answer the following questions considering the molecular orbital diagram shown:
i. List the bonding MOs and the antibonding MOs.
ii. List the symmetric MOs and antisymmetric MOs.
iii. Identify the HOMO and LUMO.