title: Full-dimensional quantum calculations of the vibrational states of H5(+).
abstract: Full-dimensional quantum calculations of the vibrational states of H5(+) have been performed on the accurate potential energy surface developed by Xie et al. [J. Chem. Phys. 122, 224307 (2005)]. The zero point energies of H5(+), H4D(+), D4H(+), and D5(+) and their ground-state geometries are presented and compared with earlier theoretical results. The first 10 low-lying excited states of H5(+) are assigned to the fundamental, overtone, and combination of the H2-H3(+) stretch, the shared proton hopping and the out-of-plane torsion. The ground-state torsional tunneling splitting, the fundamental of the photon hopping mode and the first overtone of the torsion mode are 87.3 cm(-1), 354.4 cm(-1), and 444.0 cm(-1), respectively. All of these values agree well with the diffusion Monte Carlo and multi-configuration time-dependent Hartree results where available.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Song
authors.forename: Soo-Ying
authors.initials: SY
authors.lastname: Lee
authors.forename: Minghui
authors.initials: M
authors.lastname: Yang
authors.forename: Yunpeng
authors.initials: Y
authors.lastname: Lu
mesh_terms: D006859:Hydrogen / Q000737:chemistry*; D011789:Quantum Theory; D014732:Vibration
chemical_list: D006859:Hydrogen