Chapter 19, Problem 102CP

(a)

Interpretation Introduction

Interpretation: The appropriate crystal field diagram of the given complex ion needs to be determined, if ligand A lie on the z axis:

  

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.

In octahedral complex, the ${\text{t}}_{\text{2g}}$ orbitals are lower energy orbitals in d-orbital splitting whereas ${\text{e}}_{\text{g}}$ orbitals are higher energy orbitals.

(b)

Interpretation Introduction

Interpretation: The approximate molecular orbital diagram for the given complex ion with assumption of only sigma bonding 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.

In octahedral complex, the ${\text{t}}_{\text{2g}}$ orbitals are lower energy orbitals in d-orbital splitting whereas ${\text{e}}_{\text{g}}$ orbitals are higher energy orbitals.

(c)

Interpretation Introduction

Interpretation: The difference in molecular orbital diagram and crystal field diagram for the given complex needs to be determined with respect to d-orbital. Also, the assumption needs to be reconstructed to achieve agreement between two.

  

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.

In octahedral complex, the ${\text{t}}_{\text{2g}}$ orbitals are lower energy orbitals in d-orbital splitting whereas ${\text{e}}_{\text{g}}$ orbitals are higher energy orbitals.