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The infrared spectrum of OH in Ar matrices at temperatures of 11.5 ± 0.5 K has been investigated as a function of water concentration for H 2 O:Ar ratios ranging from 1:70 to 1:1000. These data and evidence gathered from earlier experimental and theoretical work lead to an assignment of bands at 3452 and 3428 cm - 1 to the H 2 O·HO complex. This is the first time that a definitive assignment has been made to an isolated H 2 O·HO complex. This observation may have important implications for fields as diverse as molecular biology, astrochemistry, atmospheric chemistry, and electrochemistry.
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Langford et al. (2000) studied this question.
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