Questions/Coordination Compounds/Why are low spin tet...
Crystal Field Theory (CFT)Coordination Compounds

Why are low spin tetrahedral complexes rarely observed?

Expert Answer

The orbital splitting energy in tetrahedral geometry (Δt\Delta_t) is very small (49Δo\approx \frac{4}{9} \Delta_o) and is usually lower than the pairing energy (PP), so electrons do not pair up.

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