Chapter 20, Problem 7Q

Interpretation Introduction

Interpretation: The optical active behavior of cis and trans isomer of ${\left[\text{Co}{\left(\text{en}\right)}_{\text{2}}{\text{Cl}}_{\text{2}}\right]}^{+}$ is given (refer Figure $20-17$). The optical behavior of the given complex ${\left[\text{Co}\left({\text{NH}}_3\right)4{\text{Cl}}_{\text{2}}\right]}^{+}$ is to be stated.

Concept introduction: The metal complexes having ligands either adjacent to each other or across each other are called geometrical isomers and the optically active isomers rotate the plane polarized light in different directions.

The complexes that have plane of symmetry are optically inactive.

To determine: The optical behavior of the given complex ${\left[\text{Co}\left({\text{NH}}_3\right)4{\text{Cl}}_{\text{2}}\right]}^{+}$.