Chapter 10, Problem 10A.5P

(a)

Interpretation Introduction

Interpretation:

The point group of complex anion ${\left[trans\text{-Ag}{\left({\text{CF}}_{\text{3}}\right)}_{\text{2}}{\text{(CN)}}_{\text{2}}\right]}^{-}$ assuming free rotation of ${\text{CF}}_{\text{3}}$ group, has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.

(b)

Interpretation Introduction

Interpretation:

The point group of complex anion ${\left[trans\text{-Ag}{\left({\text{CF}}_{\text{3}}\right)}_{\text{2}}{\text{(CN)}}_{\text{2}}\right]}^{-}$ assuming no free rotation of staggered form of ${\text{CF}}_{\text{3}}$ group, has to be stated.  The point group of complex anion ${\left[trans\text{-Ag}{\left({\text{CF}}_{\text{3}}\right)}_{\text{2}}{\text{(CN)}}_{\text{2}}\right]}^{-}$ assuming no free rotation of eclipsed form of ${\text{CF}}_{\text{3}}$ group, has to be stated.

Concept introduction:

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