Chapter D, Problem D.6YT

Interpretation Introduction

(a)

Interpretation:

In the given figure, every region of constructive interference and destructive interference between the HOMO and LUMO is to be labeled.

Concept introduction:

The HOMO-LUMO orbital interaction concept is used to know how the reacting species interact. The electron-rich species is HOMO while the electron-deficient species is LUMO; they determine substantial net overlap in the transition state. When these two orbitals overlap with the same phases, the constructive interference occurs and the reaction is likely to be allowed. When these two orbitals overlap with the opposite phases, the destructive interference occurs and the reaction is likely to be not allowed (or forbidden).

Interpretation Introduction

(b)

Interpretation:

In the given figure, every region of constructive interference and destructive interference between the HOMO and LUMO is to be labeled.

Concept introduction:

The HOMO-LUMO orbital interaction concept is used to know how the reacting species interact. The electron-rich species is HOMO while the electron-deficient species is LUMO; they determine substantial net overlap in the transition state. When these two orbitals overlap with the same phases, the constructive interference occurs and the reaction is likely to be allowed. When these two orbitals overlap with the opposite phases, the destructive interference occurs and the reaction is likely to be not allowed (or forbidden).