Tanabe-Sugano ·
d³ term energies vs ligand field
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Δ₀/B
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Racah B
— cm⁻¹
State
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⁴A₂g ground term (baseline)
⁴T₂g / ⁴T₁g excited terms
Spin-forbidden ²Eg line
Cr³⁺ read-off · Δ₀ & B
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