G. Maier et al., SMALL RINGS .83. C3F2 ISOMERS - GENERATIO N BY PULSED FLASH PYROLYSISAND MATRIX-SPECTROSCOPIC IDENTIFICATION, Chemische Berichte, 127(4), 1994, pp. 779-782
Matrix-isolated difluorovinylidenecarbene (4) has been generated by pu
lsed flash pyrolysis from 1-chloro-3,3-difluorocyclopropene (8a) and 3
,3-difluoro-1,2-diiodocyclopropene (8b). By subsequent photolysis 4 is
omerizes to difluoropropargylene (5) and difluorocyclopropenylidene (6
). The identification of the three new carbenes is based on the compar
ison of their experimental and calculated (MP2/6-3 1 G ) infrared spe
ctra.