The synthesis and radical polymerization of 1,1-difluoro-2-vinylcyclopropane, first reported some
30 years ago, has been repeated and the assignment of polymer structure examined in detail. The monomer and
polymer have been characterized by 1H, 19F, and 13C NMR spectroscopy, differential scanning calorimetry, and
size exclusion chromatography. Analysis of the data establishes that the earlier assignments by Zhulin et al. were
erroneous, and the reassignment is in agreement with expectations based on Dolbier's theoretical and experimental
examination of radical ring opening of fluorinated cyclopropanes.