QUESTDB: a database of highly-accurate excitation energies for the electronic structure community

Mickaël Véril, Anthony Scemama, Michel Caffarel +4

We describe our efforts of the past few years to create a large set of more than 500 highly-accurate vertical excitation energies of various natures ($\pi \to {\pi }^{\ast }$, $n\to {\pi }^{\ast }$, doubl…