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Raman study of n‐nonadecane and n‐heneicosane mixtures in the solid state
Author(s) -
Maissara M.,
Devaure J.
Publication year - 1987
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250180609
Subject(s) - raman spectroscopy , solid state , phase (matter) , spectral line , chemistry , analytical chemistry (journal) , materials science , crystallography , organic chemistry , optics , physics , astronomy
The Raman spectra of two mixtures of n‐ncnadecane and n‐heneicosane in the solid phase were recorded and compared with those of the pure compounds. In their low‐temperature phases, gauche defects are observed in contrast to the pure compounds: the defects are not only GT n−4 forms but also TGT n−5 , and even kinks if heneicosane predominates in the mixture. In the high‐temperature phase, the same defects are observed but their quantity is significantly greater. A comparison between the experimental spectra and the spectra calculated from those of pure alkanes shows more gauche defects in the mixtures.