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Mousavi SJ, Berger A, Hamm P, Shalit A. Low-frequency anharmonic couplings in bromoform revealed from 2D Raman-THz spectroscopy: from the liquid to the crystalline phase. J Chem Phys 2022; 156:174501. [DOI: 10.1063/5.0090520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Two-dimensional (2D) Raman-THz spectroscopy in the frequency up to 7 THz has been applied to study the crystalline beta-phase of bromoform (CHBr3). As for liquid CHBr3, cross peaks are observed, which however sharpen up in the crystalline sample and split into assignable sub-contributions. In the Raman dimension, the frequency positions of these cross peaks coincide with the intramolecular bending modes of the CHBr3 molecules, and in the THz dimension with the IR active lattice modes of the crystal. This work expands the applicability of this new 2D spectroscopic technique to solid samples at cryogenic temperatures. Furthermore, it provides new experimental evidence that the cross peaks indeed originate from the coupling between intra- and intermolecular vibrational modes.
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Affiliation(s)
| | - Arian Berger
- Physikalisch-Chemisches Institut, Universitaet Zuerich, Switzerland
| | - Peter Hamm
- Department of Chemistry, University of Zurich, Switzerland
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Bao G, Duan D, Zhou D, Jin X, Liu B, Cui T. A New High-Pressure Polar Phase of Crystalline Bromoform: A First-Principles Study. J Phys Chem B 2010; 114:13933-9. [DOI: 10.1021/jp103823c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gang Bao
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People’s Republic of China, College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, People’s Republic of China
| | - Defang Duan
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People’s Republic of China, College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, People’s Republic of China
| | - Dawei Zhou
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People’s Republic of China, College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, People’s Republic of China
| | - Xilian Jin
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People’s Republic of China, College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, People’s Republic of China
| | - Bingbing Liu
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People’s Republic of China, College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, People’s Republic of China
| | - Tian Cui
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People’s Republic of China, College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, People’s Republic of China
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Fernández-Liencres MP, Navarro A, López JJ, Fernández M, Szalay V, de los Arcos T, García-Ramos JV, Escribano RM. The Force Field of Bromoform: A Theoretical and Experimental Investigation. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960750o] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Viktor Szalay
- Research Laboratory for Crystal Physics, Hungarian Academy of Sciences, P.O. Box 132, 1502 Budapest, Hungary
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