text: Similar to d metal complexes, d octahedral metal complexes have D spectral term. The transition is from the (t)(e) configuration (E state) to the (t)(e) configuration (T state). This could also be described as a positive "hole" that moves from the e to the t orbital set. The sign of Dq is opposite that for d, with a E ground state and a T excited state. Like the d case, d octahedral complexes do not require the Tanabe–Sugano diagram to predict their absorption spectra.