Crystal Field Stabilization Energy (CFSE) 4: Low-Spin Example

The video tutorial covers the analysis of a hexa carbonyl nickel 3 complex, starting with the calculation of the oxidation state and the number of D electrons. It then explores whether the complex is high spin or low spin, followed by drawing the crystal field diagram and calculating the crystal field stabilization energy. The tutorial concludes with an introduction to tetrahedral complexes, highlighting the differences in their splitting diagrams.

What is the first step in analyzing the hexa carbonyl nickel complex?

• Determine the number of d-electrons

• Calculate the oxidation state of nickel

• Draw the crystal field diagram

• Identify the ligand type

How many d-electrons does nickel 3+ have?

• 8

• 7

• 6

• 5

Which of the following is a strong field ligand?

• Chloride

• Carbon monoxide

• Ammonia

• Water

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

• Electrons fill the lower energy orbitals first

• Electrons fill the higher energy orbitals first

• Electrons fill randomly

• Electrons fill based on ligand type

What is the energy difference between T2G and EG orbitals in a low spin complex?

• 4/5 delta octahedral

• 3/5 delta octahedral

• 2/5 delta octahedral

• 1/5 delta octahedral

What must be considered when calculating the crystal field stabilization energy for low spin complexes?

• Coordination number

• Ligand field strength

• Pairing energy

• Oxidation state

How does the splitting diagram differ for tetrahedral complexes compared to octahedral complexes?

• There is no splitting in tetrahedral complexes

• Both T2G and EG are at the same level

• EG is on the bottom and T2G is on the top

• T2G is on the bottom and EG is on the top