Title |
Raman and IR Spectra of Ice Ih and Ice XI with an Assessment of DFT Methods
|
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Published in |
Journal of Physical Chemistry B, October 2016
|
DOI | 10.1021/acs.jpcb.6b07001 |
Pubmed ID | |
Authors |
Yuan Liu, Lars Ojamäe |
Abstract |
IR and Raman spectroscopic technology can be directly used to identify the occurrence of ferroelectric ice XI in laboratory or extraterrestrial settings. The performance of 16 different DFT methods applied on the ice Ih, VIII, IX, and XI crystal phases are evaluated. Based on a selected DFT computational scheme, the IR and Raman spectra of ice Ih and XI are derived and compared. When comparing the spectra of ice Ih and ice XI, both IR and Raman, the librational vibrations are found to be the most affected by the proton ordering. The spectroscopic fingerprint of ice XI can be used to distinguish ferroelectric ice XI from ice Ih in the universe. Furthermore, the existence of only one kind of H-bond in ice Ih is demonstrated from the overlapping sub-spectra for different types of H-bonded pair configurations in 16 isomers of ice Ih, which provides an illustration to the historic debate on whether one or two kinds of H-bonds existed in ice. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 33 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 8 | 24% |
Professor > Associate Professor | 8 | 24% |
Researcher | 6 | 18% |
Student > Master | 4 | 12% |
Student > Bachelor | 1 | 3% |
Other | 3 | 9% |
Unknown | 3 | 9% |
Readers by discipline | Count | As % |
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Chemistry | 11 | 33% |
Physics and Astronomy | 6 | 18% |
Materials Science | 3 | 9% |
Environmental Science | 1 | 3% |
Pharmacology, Toxicology and Pharmaceutical Science | 1 | 3% |
Other | 4 | 12% |
Unknown | 7 | 21% |