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Definition: Octahedral Site Stabilization Energy (OSSE) is the difference between the Crystal Field Stabilization Energy (CFSE) values in octahedral and tetrahedral geometries.
Purpose: It helps in understanding the relative stability of metal complexes in different coordination geometries.
The calculator uses the formula:
Where:
Explanation: The difference between the CFSE values indicates the energetic preference for octahedral vs tetrahedral coordination.
Details: OSSE helps predict the preferred geometry of coordination complexes and understand their electronic structure and stability.
Tips: Enter the CFSE values for both octahedral and tetrahedral geometries in Diopter. Both values must be ≥ 0.
Q1: What does a positive OSSE value indicate?
A: A positive value suggests that the octahedral geometry is more stable than tetrahedral for that particular complex.
Q2: What are typical units for CFSE?
A: CFSE is typically measured in Diopter (D) or cm⁻¹ (wavenumbers).
Q3: How do I determine CFSE values?
A: CFSE values can be determined experimentally from electronic spectra or calculated using crystal field theory.
Q4: What factors affect OSSE?
A: Factors include the nature of the metal ion, oxidation state, ligand field strength, and electronic configuration.
Q5: Can OSSE be negative?
A: Yes, a negative OSSE indicates that the tetrahedral geometry is more stable than octahedral for that complex.