Raman Spectroscopy Study of Structurally Uniform Hydrogenated Oligomers of α-Olefins.

The expansion of the range of physico-chemical methods in the study of industrially significant α-olefin oligomers and polymers is of particular interest. In our article, we present a comparative Raman study of structurally uniform hydrogenated dimers, trimers, tetramers, and pentamers of 1-hexene and 1-octene, that are attractive as bases for freeze-resistant engine oils and lubricants. We found out that the joint monitoring of the disorder longitudinal acoustic mode (D-LAM) and symmetric C-C stretching modes allows the quantitative characterization of the number and length of alkyl chains (i.