%0 Journal Article
%A Hoshina, Hiromichi
%A Slipchenko, Mikhail
%A Prozument, Kirill
%A Verma, Deepak
%A Schmidt, Michael W.
%A Ivanic, Joseph
%A Vilesov, Andrey F.
%D 2016
%T Infrared Spectroscopy and Structure of (NO)n Clusters
%U https://acs.figshare.com/articles/journal_contribution/Infrared_Spectroscopy_and_Structure_of_NO_sub_i_n_i_sub_Clusters/2070337
%R 10.1021/acs.jpca.5b10228.s001
%2 https://acs.figshare.com/ndownloader/files/3699100
%K quantum chemical calculations
%K trimer
%K van der Waals
%K dimer bands
%K tetramer
%X Nitrogen oxide clusters (NO)n have
been studied in He droplets via infrared depletion spectroscopy and
by quantum chemical calculations. The ν1 and ν5 bands of cis-ON-NO dimer have been observed
at 1868.2 and 1786.5 cm–1, respectively. Furthermore,
spectral bands of the trimer and tetramer have been located in the
vicinity of the corresponding dimer bands in accord with computed
frequencies that place NO-stretch bands of dimer, trimer, and tetramer
within a few wavenumbers of each other. In addition, a new line at
1878.1 cm–1 close to the band origin of single molecules
was assigned to van der Waals bound dimers of (NO)2, which
are stabilized due to the rapid cooling in He droplets. Spectra of
larger clusters (n > 5), have broad unresolved
features
in the vicinity of the dimer bands. Experiments and calculations indicate
that trimers consist of a dimer and a loosely bound third molecule,
whereas the tetramer consists of two weakly bound dimers.
%I ACS Publications