RT info:eu-repo/semantics/article T1 Flexibility unleashed in acyclic monoterpenes: conformational space of citronellal revealed by broadband rotational spectroscopy A1 Domingos, Sérgio R. A1 Pérez, Cristóbal A1 Medcraft, Chris A1 Pinacho, Pablo A1 Schnell, Melanie AB Conformational flexibility is intrinsically related to the functionality of biomolecules. Elucidation of the potential energy surface is thus a necessary step towards understanding the mechanisms for molecular recognition such as docking of small organic molecules to larger macromolecular systems. In this work, we use broadband rotational spectroscopy in a molecular jet experiment to unravel the complex conformational space of citronellal. We observe fifteen conformations in the experimental conditions of the molecular jet, the highest number of conformers reported to date for a chiral molecule of this size using microwave spectroscopy. Studies of relative stability using different carrier gases in the supersonic expansion reveal conformational relaxation pathways that strongly favour ground-state structures with globular conformations. This study provides a blueprint of the complex conformational space of an important biosynthetic precursor and gives insights on the relation between its structure and biological functionality. SN 1463-9076 YR 2016 FD 2016 LK https://uvadoc.uva.es/handle/10324/73172 UL https://uvadoc.uva.es/handle/10324/73172 LA eng NO Physical Chemistry Chemical Physics, junio 2016, 18, 16682-16689 NO Producción Científica DS UVaDOC RD 21-ene-2025