The dimer of perfluoropropene has been separated into three fractions. Evidence from mass spectra and nuclear magnetic resonance shows that the fractions, identified by infrared bands, are : 9·39 µ, trans-1,2-; 9·59 µ, cis-1·2-; 10·53 µ, 11·84 µ, a mixture of cis- and trans-1,3-ditrifluoromethylhexafluorocyclobutane.
B. Atkinson and P. B. Stockwell, J. Chem. Soc. B, 1966, 740 DOI: 10.1039/J29660000740
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