Interchain vibrational coupling in phase II (hexagonal) n-alkanes
- 15 September 1982
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 77 (6) , 2825-2830
- https://doi.org/10.1063/1.444173
Abstract
The intense methylene scissoring and rocking bands near 1460 and 720 cm−1 in the infrared spectra of the odd n-alkanes C17–C27 show doubling in phase II, the so-called hexagonal phase. This doubling, which is shown to be due to interchain vibrational coupling, is highly dependent on temperature and chain length. A possible explanation for this dependency is offered in terms of a combination of static and dynamic factors associated with more or less constrained rotational/twisting motions of the chains about their long axes.Keywords
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