title: Spectroscopic evidence for a gas-phase librating G-quartet-Na(+) complex.
abstract: The IRMPD spectrum of the G-quartet-Na(+) complex, in combination with an ab initio molecular dynamic simulation, revealed the presence of two metastable populations of conformers separated by a free energy barrier easily accessible at room temperature.
authors.affiliation: Pharmaceutical Chemistry and Technologies, Sapienza-University of Rome, Piazzale Aldo Moro, 5, 00185, Rome, Italy. caterina.fraschetti@uniroma1.it.
authors.forename: C
authors.initials: C
authors.lastname: Fraschetti
authors.forename: M
authors.initials: M
authors.lastname: Montagna
authors.forename: L
authors.initials: L
authors.lastname: Guarcini
authors.forename: L
authors.initials: L
authors.lastname: Guidoni
authors.forename: A
authors.initials: A
authors.lastname: Filippi
mesh_terms: D054856:G-Quadruplexes; D005740:Gases / Q000737:chemistry*; D008968:Molecular Conformation; D056004:Molecular Dynamics Simulation; D012964:Sodium / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013816:Thermodynamics
chemical_list: D005740:Gases; D012964:Sodium