Infrared spectroscopic studies of solvent effects on the conformation of n-alkanes

DOI	Resolve DOI: https://doi.org/10.1139/v86-254
Author	Search for: Casal, H. L.¹; Search for: Yang, P. W.¹; Search for: Mantsch, H. H.¹
Name affiliation	National Research Council Canada
Format	Text
Type	Article
Journal title	Canadian Journal of Chemistry
ISSN	0008-4042 1480-3291
Volume	64
Issue	8
Pages	1544–1547
Abstract	The infrared spectra of specifically deuterated n-tridecane-7,7-d₂ pure and mixed with several linear and branched hydrocarbons have been measured as a function of temperature. The average gauche fraction at the middle of the n-tridecane chain has been determined from the intensities of conformation-specific CD₂ rocking bands. The results indicate that the concentration of gauche rotamers in the centre of the n-C₁₃ chains varies with the solvent. For example, when n-tridecane is dissolved in other n-hydrocarbons the gauche concentration decreases when the chain length of the solvent is shorter than n-C₁₃ and increases when the solvent chains are longer than n-C₁₃. However, no simple, direct correlation is found between these solvent-induced changes in gauche concentration and measured thermodynamic quantities of mixing.
Publication date	1986-08
Language	English
Peer reviewed	Yes
NPARC number	23001392
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Record identifier	b76fe125-f140-4789-95e6-868c42aec67b
Record created	2017-02-01
Record modified	2020-03-17