Nuclear Biology & Nuclear Chemistry - Ligand Field Theory - Non-Elaborate Posts - Post 2

 

 

One commonly used measure of ligand field strength is the parameter often called Δ (Delta) or 10Dq in octahedral coordination. It’s the energy difference between lower-energy d orbitals (often labeled t₂g in an octahedral arrangement) and higher-energy d orbitals (often labeled e_g). Strong-field ligands lead to a large Δ (large separation), often inducing electrons to pair in lower orbitals (low-spin configurations). Weak-field ligands give smaller Δ, often allowing more unpaired electrons (high-spin).

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