Crystal Field Stabilization Energy (CFSE) 3: Low-Spin Example

The video tutorial explains how to calculate the crystal field stabilization energy for a coordination complex, specifically hexa amine molybdenum 2. It covers the steps to determine the metal's charge and oxidation state, calculate the number of D electrons, and decide whether the complex is low or high spin. The tutorial also demonstrates setting up a crystal field diagram and calculating the stabilization energy, including considerations for pairing energy.

What is the first step in calculating the crystal field stabilization energy for a coordination complex?

• Determine the geometry of the complex

• Measure the bond angles

• Calculate the metal's oxidation state

• Identify the ligands involved

How many d-electrons are present in molybdenum 2+?

• 8

• 6

• 4

• 2

What determines whether a complex is low spin or high spin?

• The overall charge of the complex

• The number of d-electrons and whether it is a first-row transition metal

• The type of metal

• The number of ligands

In a low spin complex, how are the d-electrons filled in the crystal field diagram?

• Electrons fill orbitals randomly

• Electrons fill the higher energy orbitals first

• Electrons fill the lower energy orbitals first

• Electrons are evenly distributed across all orbitals

What is the role of the degenerate energy in the crystal field diagram?

• It affects the geometry of the complex

• It is the reference point for measuring energy differences

• It determines the overall charge of the complex

• It indicates the number of unpaired electrons

What is the significance of pairing energy in low spin complexes?

• It increases the number of unpaired electrons

• It decreases the overall energy of the complex

• It represents the energy cost of pairing electrons in the same orbital

• It has no effect on the stabilization energy

How is the crystal field stabilization energy calculated for a low spin complex?

• By adding the energies of all filled orbitals

• By subtracting the pairing energy from the stabilization energy of the t2g orbitals

• By multiplying the number of electrons by the energy difference between orbitals

• By considering only the e_g orbitals