Concept explainers
Interpretation:
It is to be shown that Frost's circle could be adapted to generate the orbital energy level diagram shown for cyclopentadienyl anion.
Concept introduction:
The number of
These
Frost's circle is used to set up the Huckel's molecular orbitals of planar, monocyclic, and completely conjugated polyenes.
The energy levels can be superimposed on a polygon with appropriate sides with the vertex pointing down.
By inscribing a polygon having appropriate number of sides within a circle so that one of its corners lies at the bottom, each of the polygon's corners defines a
A horizontal dotted line drawn through the center of the circle separates the bonding and anti-bonding molecular orbitals.
The bonding orbitals are shown by the vertices below the halfway mark of the circle. The antibonding orbitals are shown by the vertices above the halfway mark. If the vertices lie exactly in the middle, then they represent non-bonding orbitals.
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Organic Chemistry - Standalone book
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