basic

Crystal-Field Stabilisation Energy (CFSE) in Octahedral Field Calculator

CFSE = (−0.4·e_g + 0.6·t₂g_electrons) · Δ_o.

Compute the crystal-field stabilisation energy (CFSE) for a transition-metal complex in an octahedral field: CFSE = n(t₂g)·(−0.4Δₒ) + n(eₓ)·(+0.6Δₒ), where n(t₂g) and n(eₓ) are the numbers of electrons in the t₂g and eₓ sets respectively. Reports CFSE in units of Δₒ and in kJ/mol when Δₒ (cm⁻¹) is provided.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

cm⁻¹

Results

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

CFSE = n(t₂g)·(−0.4) + n(eₓ)·(0.6) [×Δₒ].

In depth

Compute the crystal-field stabilisation energy (CFSE) for a transition-metal complex in an octahedral field: CFSE = n(t₂g)·(−0.4Δₒ) + n(eₓ)·(+0.6Δₒ), where n(t₂g) and n(eₓ) are the numbers of electrons in the t₂g and eₓ sets respectively. Reports CFSE in units of Δₒ and in kJ/mol when Δₒ (cm⁻¹) is provided.