Chapter 1
Molecular Orbitals o Common Functional Groups
 
Description of Orbitals
Nonbonding MOsHold the lone-pair electrons
Here, both no and n’o are non-bonding MOs. Careful examination would reveal that the lower lying NBMO is alligned along the C-O bond while the higher lying is perpendicular, but in the plane of the molecule. These NBMOs are therefore not of same energy (non-degenerate).