Multiply charged species in the gas phase. Are they so rare?
Espèces multichargées en phase gazeuse. Sont-ils si rares ?
Manuel Yañez
Universidad autonoma de Madrid
Mardi 6 mars à 11h, bibliothèque LCT, tour 12-13, 4e étage
Doubly charged species in the gas phase have been an oddity for many years, but the possibility of generating and detecting them with the new available experimental techniques, has faced the scientific community with challenging questions regarding their stability, bonding and reactivity. In this presentation I will analyze, mainly from a theoretical perspective, these questions. In particular, I will discuss different challenging cases, and how it is possible to calculate lifetimes, and consequently establish interesting trends in the intrinsic stability of doubly charged containing systems as a function of their bonding characteristics. The final part of my presentation will deal with the unimolecular reactivity of doubly charged molecular ions involving important biochemical systems, as well as the effect of doubly charged metal ions on the tautomerism of DNA base-pairs responsible of mutagenic changes.
Although the summary of the seminar is in English the presentation can be done in French or in something that approaches French.