INFRARED SPECTRA AND INTENSITIES OF WATER COMPLEXES WITH NITROGEN, OXYGEN AND ARGON IN HELIUM DROPLETS

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The infrared spectra of N$_{2}$-H$_{2}$O, O$_{2}$-H$_{2}$O and Ar-H$_{2}$O complexes in superfluid He droplets were measured in the range of the stretching vibrational bands of water molecules. The infrared intensity of the anti-symmetric stretching bands in these complexes were found to be very similar to that in single H$_{2}$O molecules. The spectra show that H$_{2}$O in O$_{2}$-H$_{2}$O and Ar-H$_{2}$O rotates nearly freely, whereas no indication of H$_{2}$O internal rotation was observed in N$_{2}$-H$_{2}$O spectra. The conformation of the N$_{2}$-H$_{2}$O complexes was estimated from the rotational constants.

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Author Institution: Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan; Department of Chemistry, University of Southern California, Los Angeles, CA 90080, USA; Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada; Department of Chemistry, University of Southern California, Los Angeles, CA 90080, USA

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