Tanabe-Sugano diagrams are used in coordination chemistry to predict electromagnetic absorptions of metal coordination compounds of tetrahedral and octahedral complexes. The analysis derived from the diagrams can also be compared to experimental spectroscopic data. When combined with spectroscopic data, an approximation to the crystal field splitting energy (10Dq), generated by ligands attached to a metal center, can be found.

The purpose of this app is to allow users to browse the different diagriams for octahedral complexes currently available and compute the value of 10Dq given specific wavelengths of transitions as well as other variables such as the B Racah Parameter

Instructions and a few frequently asks questions can be found in the Manual section

This app was inspired and built on data and prior work by Ricardo B. Ayres and Anselm Hahn

To use the app:

1. Select the first and second transistions

2. Input the energy of the transitions in wavenumbers

3. Press enter