Chapter 19, Problem 63E

(a)

Interpretation Introduction

Interpretation: The isomerism in ${\text{Ru( phen)}}_3^{2+}$ complex needs to be interpreted.

Concept Introduction:

A metal complex can be show as ${\text{[ML}}_{\text{n}}\text{]}$ . Here M indicates the metal atom or ion whereas L indicates the ligands which are present in ‘n’ numbers. The coordination number defined the number of coordinate bonds between metal and ligand.

Stereoisomer can be defined as the coordination complexes or molecules which have same structural formula but different arrangement of bonded atoms or group in 3-D space.

Optical isomers can be defined as the complexes or molecules which have same structural formula but different orientation of bonded ligands in the plane therefore they show different optical properties.

(b)

Interpretation Introduction

Interpretation: The crystal field diagram for ${\text{Ru( phen)}}_3^{2+}$ complex in if it is a diamagnetic complex ion needs to be determined.

Concept Introduction:

Crystal field theory is the theory given to explain the bonding in the coordination complexes. As ligand approaches towards the metal ion, the d-orbital of metal ion divide according to the energy of metal ion.

On the basis of energy and degeneracy, the d-orbital can be classified as ${\text{t}}_{\text{2g}}$ and ${\text{e}}_{\text{g}}$ orbitals. The electrons will fill according to their energy levels.