title: Infrared measurements and calculations on H2O.HO.
abstract: We have measured the infrared spectrum of H2O.HO in argon matrices at 11.5 +/- 0.5 K. We have also calculated the vibrational frequencies and intensities of the H2O.HO complex. As a result of these measurements and calculations, we have assigned a previously unassigned absorption band at 3442.1 cm-1 to the OH stretch in the radical complexed to the water molecule. This absorption originates from a complex that is situated in a different site within the argon matrix to those absorptions already assigned to this vibration at 3452.2 and 3428.0 cm-1. We observe a decrease in intensity of the OH radical stretching vibration of the H2O.HO complex upon isotopic substitution of D for H that agrees well with our calculations.
authors.affiliation: Chemistry, M313, School of Biomedical and Chemical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Australia.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Cooper
authors.forename: Henrik G
authors.initials: HG
authors.lastname: Kjaergaard
authors.forename: Vaughan S
authors.initials: VS
authors.lastname: Langford
authors.forename: Allan J
authors.initials: AJ
authors.lastname: McKinley
authors.forename: Terence I
authors.initials: TI
authors.lastname: Quickenden
authors.forename: Daniel P
authors.initials: DP
authors.lastname: Schofield
mesh_terms: D017665:Hydroxyl Radical / Q000737:chemistry*; D008958:Models, Molecular; D013055:Spectrophotometry, Infrared / Q000379:methods; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D017665:Hydroxyl Radical