Local interaction energy in the ground state. For analysis of excited-state energies in MS-EDA, we focus on the energy terms that are directly related to the excimer complex. Therefore, all Scheme 1. Multistate energy decomposition analysis (MS-EDA) of the excimer binding energy Δ𝐸𝐸 𝑏𝑏 . The top row corresponds to the physical process of excimer formation (eq 2). The remaining illustration highlights each energy terms defined by eq 3 and their progressive change in MS-EDA. The shapes of objects represent molecular geometries, while different colors depict the corresponding wave functions with boundaries shown for block-localization.