Chapter 9, Problem 9E.2BE

(i)

Interpretation Introduction

Interpretation:

The electronic configuration of the allyl radical has to be predicted.  The $\text{π-}$ electron binding energy for allyl radical has to be calculated.

Concept introduction:

The pi-molecular orbital energy level diagrams for the conjugated molecules can be drawn with the help of a set of approximations.  These approximations were suggested by Erich Huckel in 1931.  The $\text{π}$-orbitals are assumed to be made from the linear combination of $\text{p}$-orbitals.

(ii)

Interpretation Introduction

Interpretation:

The electronic configuration of the cyclobutadiene cation has to be predicted.  The $\text{π-}$ electron binding energy for cyclobutadiene cation has to be calculated.

Concept introduction:

The pi-molecular orbital energy level diagrams for the conjugated molecules can be drawn with the help of a set of approximations.  These approximations were suggested by Erich Huckel in 1931.  The $\text{π}$-orbitals are assumed to be made from the linear combination of $\text{p}$-orbitals.