Chapter 11, Problem 11.1IA

(a)

Interpretation Introduction

Interpretation:

The molecule ${\text{CH}}_{\text{4}}$ has to be classified as spherical, symmetric, linear, or asymmetric rotor.  The corresponding has to be validated with group theoretical arguments.

Concept introduction:

The rigid rotators can be classified spherical, symmetric, linear, or asymmetric rotor depending on the moment of inertia.  The spherical rotator has either ${\text{O}}_{\text{h}}$ or ${\text{T}}_{\text{d}}$ point group.  The symmetric rotator has point group with atleast one threefold axis, whereas the asymmetric rotator does not has any point group with threefold axis or higher.  The linear rotators are linear molecules.

(b)

Interpretation Introduction

Interpretation:

The molecule ${\text{CH}}_{\text{3}}\text{CN}$ has to be classified as spherical, symmetric, linear, or asymmetric rotor.  The corresponding has to be validated with group theoretical arguments.

Concept introduction:

As mentioned in the concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:

The molecule ${\text{CO}}_2$ has to be classified as spherical, symmetric, linear, or asymmetric rotor.  The corresponding has to be validated with group theoretical arguments.

Concept introduction:

As mentioned in the concept introduction in part (a).

(d)

Interpretation Introduction

Interpretation:

The molecule ${\text{CH}}_{\text{3}}\text{OH}$ has to be classified as spherical, symmetric, linear, or asymmetric rotor.  The corresponding has to be validated with group theoretical arguments.

Concept introduction:

As mentioned in the concept introduction in part (a).

(e)

Interpretation Introduction

Interpretation:

The molecule benzene has to be classified as spherical, symmetric, linear, or asymmetric rotor.  The corresponding has to be validated with group theoretical arguments.

Concept introduction:

As mentioned in the concept introduction in part (a).

(f)

Interpretation Introduction

Interpretation:

The molecule pyridine has to be classified as spherical, symmetric, linear, or asymmetric rotor.  The corresponding has to be validated with group theoretical arguments.

Concept introduction:

As mentioned in the concept introduction in part (a).