Infrared measurements and calculations on H2O.HO |
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Authors: | Cooper Paul D Kjaergaard Henrik G Langford Vaughan S McKinley Allan J Quickenden Terence I Schofield Daniel P |
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Institution: | Chemistry, M313, School of Biomedical and Chemical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Australia. |
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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. |
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