## bond-dissociation energy (BDE)

in theoretical chemistry
https://doi.org/10.1351/goldbook.BT07006
For a diatomic molecule, the maximum vibrational energy that a molecule can have prior to its @[email protected] into the ground electronic states of the @[email protected] atoms (spectroscopic @[email protected], $$D_{\text{e}}$$). The $$D_{\text{e}}$$ value is related to the chemical @[email protected] energy: $$D_{\text{0}}=D_{\text{e}}- \mathrm{E}_{\text{vib}}\left(0\right)$$, where $$\mathrm{E}_{\text{vib}}\left(0\right)$$ is zero-point vibrational energy. This definition is usually extended to the @[email protected] of polyatomic molecules into certain molecular fragments through homolytic or heterolytic bond cleavages.
Source:
PAC, 1999, 71, 1919. (Glossary of terms used in theoretical organic chemistry) on page 1928 [Terms] [Paper]