title: Effective interaction energy of water dimer at room temperature: an experimental and theoretical study.
abstract: Buffer-gas pressure broadening for the nu(1)+nu(3) band of H(2)O at 1.34-1.44 mum for a variety of buffer gases was investigated at room temperature using continuous-wave cavity ring-down spectroscopy. The effective interaction energy of water dimer under room temperature conditions was evaluated from the pressure broadening coefficients for rare gases using Permenter-Seaver's relation. Monte Carlo simulations were performed using ab initio molecular orbital calculations to evaluate the interaction energies for the water dimer at 300 K. In this theoretical calculation, the orientations of the two water molecules were statistically treated.
authors.affiliation: Laboratory of Photochemical Reaction, Department of Molecular Engineering, Kyoto University, Kyoto 615-8510, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nakayama
authors.forename: H
authors.initials: H
authors.lastname: Fukuda
authors.forename: T
authors.initials: T
authors.lastname: Kamikawa
authors.forename: Y
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: A
authors.initials: A
authors.lastname: Sugita
authors.forename: M
authors.initials: M
authors.lastname: Kawasaki
authors.forename: T
authors.initials: T
authors.lastname: Amano
authors.forename: H
authors.initials: H
authors.lastname: Sato
authors.forename: S
authors.initials: S
authors.lastname: Sakaki
authors.forename: I
authors.initials: I
authors.lastname: Morino
authors.forename: G
authors.initials: G
authors.lastname: Inoue
mesh_terms: D003198:Computer Simulation; D019281:Dimerization; D004735:Energy Transfer; D046911:Macromolecular Substances / Q000737:chemistry; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D011312:Pressure; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: D046911:Macromolecular Substances; D014867:Water