Kavitha, G. ; Narayana, Chandrabhas (2007) Pressure-induced structural transition inn-pentane: A Raman study The Journal of Physical Chemistry B, 111 (25). pp. 7003-7008. ISSN 1089-5647
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Official URL: https://pubs.acs.org/doi/abs/10.1021/jp068285a
Related URL: http://dx.doi.org/10.1021/jp068285a
Abstract
Pressure-induced Raman spectroscopy studies on n-pentane have been carried out up to 17 GPa at ambient temperature. n-Pentane undergoes a liquid−solid transition around 3.0 GPa and a solid−solid transition around 12.3 GPa. The intensity ratio of the Raman modes related to all-trans conformation (1130 cm-1 and 2850 cm-1) to that of gauche conformation (1090 cm-1 and 2922 cm-1) suggests an increase in the gauche population conformers above 12.3 GPa. This is accompanied with broadening of Raman modes above 12.3 GPa. The high-pressure phase of n-pentane above 12.3 GPa is a disordered phase where the carbon chains are kinked. The pressure-induced order−disorder phase transition is different from the behavior of higher hydrocarbon like n-heptane.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 113621 |
Deposited On: | 23 Apr 2018 11:11 |
Last Modified: | 23 Apr 2018 11:11 |
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