title: Adsorption of water dimer on platinum(111): identification of the -OH···Pt hydrogen bond.
abstract: The fundamental structure of an isolated water dimer on Pt(111) was determined by means of a spectroscopic method using scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. Two water molecules on adjacent atop sites form a dimer through a hydrogen bond, and they rotate even at a substrate temperature of 5 K. Action spectroscopy using STM (STM-AS) for water dimer hopping allows us to obtain the vibrational spectrum of a single water dimer on Pt(111). Comparisons between the experiments and theory show that one of the OH groups of the acceptor water molecule points toward the surface to form an -OH···Pt hydrogen bond.
authors.affiliation: Catalysis Research Center, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Kenta
authors.initials: K
authors.lastname: Motobayashi
authors.forename: Líney
authors.initials: L
authors.lastname: Árnadóttir
authors.forename: Chikako
authors.initials: C
authors.lastname: Matsumoto
authors.forename: Eric M
authors.initials: EM
authors.lastname: Stuve
authors.forename: Hannes
authors.initials: H
authors.lastname: Jónsson
authors.forename: Yousoo
authors.initials: Y
authors.lastname: Kim
authors.forename: Maki
authors.initials: M
authors.lastname: Kawai
keywords: DFT; hydrogen bond; scanning tunneling microscopy; surface science; vibrational spectroscopy; water