title: Communication: Vibrational spectroscopy of atmospherically relevant acid cluster anions: bisulfate versus nitrate core structures.
abstract: Infrared multiple photon dissociation spectra for the smallest atmospherically relevant anions of sulfuric and nitric acid allow us to characterize structures and distinguish between clusters with a bisulfate or a nitrate core. We find that bisulfate is the main charge carrier for HSO(4)(-)·H(2)SO(4)·HNO(3) but not for NO(3)(-)·H(2)SO(4)·HNO(3). For the mixed dimer anion, we find evidence for the presence of two isomers: HSO(4)(-)·HNO(3) and NO(3)(-)·H(2)SO(4). Density functional calculations accompany the experimental results and provide support for these observations.
authors: Department of Chemistry, University of California, Berkeley, California 94720, USA.
authors: Tara I
authors: TI
authors: Yacovitch
authors: Nadja
authors: N
authors: Heine
authors: Claudia
authors: C
authors: Brieger
authors: Torsten
authors: T
authors: Wende
authors: Christian
authors: C
authors: Hock
authors: Daniel M
authors: DM
authors: Neumark
authors: Knut R
authors: KR
authors: Asmis