Chapter 11, Problem 11D.1ST

Interpretation Introduction

Interpretation:

Absorption corresponding to $\left(n\to {\pi }^{*}\right)and\left(\pi \to {\pi }^{*}\right)$ has to be assigned.

Concept Introduction:

Chromophores are parts of a molecules that has a characteristic optical absorption and is responsible for having color in a compound.

Electronic transitions take place between different state. The possible electronic transitions and the increasing order of energy is given below,

  $\left(n\to {\pi }^{*}\right)<\left(n\to {\sigma }^{*}\right)<\left(\pi \to {\pi }^{*}\right)<\left(\sigma \to {\sigma }^{*}\right)$.