Premium
Difluorovinylidene, F 2 CC:
Author(s) -
Breidung Jürgen,
Bürger Hans,
Kötting Carsten,
Kopitzky Rodion,
Sander Wolfram,
Senzlober Michael,
Thiel Walter,
Willner Helge
Publication year - 1997
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199719831
Subject(s) - isomerization , irradiation , chemistry , alkyne , matrix isolation , kinetic energy , photochemistry , crystallography , infrared spectroscopy , physics , organic chemistry , catalysis , quantum mechanics , nuclear physics
An alkyne–vinylidene isomerization is also possible with the difluoro compounds 1 and 2! Irradiation of 2 (λ = 193 nm) in an Ar matrix yields 1 exclusively. The IR spectrum agrees with results of novel abinitio calculations, which also suggest that 1 —in sharp contrast to the vinylidenes RHCC—is protected against isomerization into 2 by a kinetic barrier. Irradiation with light with λ > 230nm converts 1 back into 2 . Already at 35–42 K 1 adds CO and N 2 to yields F 2 CCCO and F 2 CCNN, respectively.