lowest unoccupied molecular orbital

acronym: LUMO
https://doi.org/10.1351/goldbook.08837
Lowest-energy molecular orbital that is unoccupied in the ground state but occupied by one or more electrons if the molecular entity occurs in its first electronically excited state.
See also: molecular orbital theory, energy band theory
Source:
PAC, 2022, 94, 15. (Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)) on page 37 [Terms] [Paper]
Citation: 'lowest unoccupied molecular orbital' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08837 RIS BibTex EndNote
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