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Ro‐vibrational Spectra of ( para ‐H 2 ) N ‐CH 4 in He Droplets
Author(s) -
Hoshina Hiromichi,
Sliter Russell,
Ravi Aakash,
Kuma Susumu,
Momose Takamasa,
Vilesov Andrey F.
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201600484
Subject(s) - spectral line , infrared spectroscopy , chemistry , materials science , crystallography , analytical chemistry (journal) , physics , organic chemistry , astronomy
In this work, we report on the infrared spectroscopic study of clusters of CH 4 molecules with up to N =80 para ‐hydrogen molecules assembled inside He droplets. Upon increase of the number of the added para ‐hydrogen molecules up to about N =12, both the rotational constant, B , and the origin frequency of the υ 3 band of CH 4 decrease gradually. In the range of 6 ≤ N ≤12, the spectra indicate some abrupt changes of B and υ 3 with both values being approximately constant at N ≥12. The origin of this effect is discussed. Comparison of the spectra of methane molecules in para ‐hydrogen clusters to that in solid para ‐hydrogen is also presented.