Infrared spectra of seeded hydrogen clusters: (para- H 2) N-N 2O and (ortho- H 2) N-N 2O, N=2-13

Jian Tang, A. R.W. McKellar

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26 Citations (Scopus)

Abstract

High-resolution infrared spectra of clusters containing para-H2 and/or ortho-H2 and a single nitrous oxide molecule are studied in the 2225-cm-1 region of the ν1 fundamental band of N2O. The clusters are formed in pulsed supersonic jet expansions from a cooled nozzle and probed using a tunable infrared diode laser spectrometer. The simple symmetric rotor-type spectra generally show no resolved K structure, with prominent Q -branch features for ortho-H2 but not para-H2 clusters. The observed vibrational shifts and rotational constants are reported. There is no obvious indication of superfluid effects for para-H2 clusters up to N=13. Sharp transitions due to even larger clusters are observed, but no definite assignments are possible. Mixed (para- H2) N-(ortho- H2) M-N2O cluster line positions can be well predicted by linear interpolation between the corresponding transitions of the pure clusters.

Original languageEnglish
Article number114314
JournalJournal of Chemical Physics
Volume123
Issue number11
DOIs
Publication statusPublished - Sep 15 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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