Infrared measurements and calculations on H2O.HO.
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.
Cooper
Paul D
PD
Chemistry, M313, School of Biomedical and Chemical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Australia.
Kjaergaard
Henrik G
HG
Langford
Vaughan S
VS
McKinley
Allan J
AJ
Quickenden
Terence I
TI
Schofield
Daniel P
DP
D017665:Hydroxyl Radical / Q000737:chemistry*; D008958:Models, Molecular; D013055:Spectrophotometry, Infrared / Q000379:methods; D014867:Water / Q000737:chemistry*
D014867:Water; D017665:Hydroxyl Radical