Top topic this week
Back to FAQs
Related FAQs
Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
Ground state energy term of d7 octahedral
Accepted Answer
The ground state energy term for a d⁷ octahedral complex is ⁴T₁g. This arises from the following considerations:
1. High Spin vs. Low Spin: For d⁷, in an octahedral field, the complex can be either high spin or low spin depending on the ligand field strength. The energy level splitting of the d orbitals determines this.
2. Hund's Rule: The ground state term is determined by the maximum spin multiplicity. In this case, the d⁷ configuration leads to a maximum spin multiplicity of 4 (S = 3/2), giving rise to the superscript ⁴.
3. Tanabe-Sugano Diagram: The Tanabe-Sugano diagram for a d⁷ octahedral complex helps visualize the energy levels and predict the ground state term. The lowest energy state in the diagram corresponds to the ⁴T₁g term.
4. Spectroscopic Term Symbol: The subscript 'g' indicates the ground state is gerade (symmetric) with respect to inversion.
5. Ligand Field Strength: The exact energy level of the ⁴T₁g term will depend on the specific ligands involved in the complex and their field strength. Strong field ligands lead to larger splitting and potentially lower spin states.
Articles you might like