Identification of the isomers of ditrifluoromethylhexafluorocyclobutane
Abstract
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.