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Raman spectroscopy of ethane (C 2 H 6 ) to 120 GPa at 300 K
Author(s) -
Read Liam Q.,
Spender James E.,
Proctor John E.
Publication year - 2020
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5971
Subject(s) - raman spectroscopy , analytical chemistry (journal) , chemistry , molecular vibration , molecule , decomposition , phase (matter) , materials science , crystallography , optics , physics , organic chemistry
We have conducted a Raman study of solid ethane (C 2 H 6 ) at pressures up to 120 GPa at 300 K. We observe changes within the ν 3 and ν 11 Raman‐active vibrational modes providing evidence for several previously unobserved phase transitions at room temperature. These are located from 16 to 20 GPa, ~35 GPa, and ~60 GPa. We also could no longer measure the ν 3 and ν 11 modes from 75 GPa onward. We did not, however, observe any signs of the ethane molecule undergoing decomposition, up to the highest pressures measured. We also recorded spectra of the (2ν 8 , 2ν 11 ), ν 1 , and ν 10 modes but observed more limited changes in the behaviour of these modes.