(Cyanomethylene)cyclopropane
(5 ) and 1-cyano-2-methylenecyclopropane (7 ) have vapor pressures measured with a capacitance manometer of 1.2
and 1.1 Torr at room temperature, respectively. Each was premixed
with argon prior to depositing in a ratio of ∼1:1000 and ∼1:700
for5 and 7 , respectively. The sample was
deposited on a CsI window maintained at a temperature of 30 K by using
a Lake Shore Cryotronics temperature controller (model 331). The infrared
spectra of the matrix-isolated samples were obtained from 4000 to
400 cm–1 using a Thermo Nicolet Nexus 870 FT-IR
instrument (MCT-B detector). Sample irradiation was performed using
a Xe arc lamp (300 W, ILC Technology LX300UV). A λ > 237
nm
cutoff filter (Schott glass) was used for one irradiation experiment.
The matrix-isolation apparatus and technique have been described previously.50 (link)−52 (link)
(
and 1.1 Torr at room temperature, respectively. Each was premixed
with argon prior to depositing in a ratio of ∼1:1000 and ∼1:700
for
deposited on a CsI window maintained at a temperature of 30 K by using
a Lake Shore Cryotronics temperature controller (model 331). The infrared
spectra of the matrix-isolated samples were obtained from 4000 to
400 cm–1 using a Thermo Nicolet Nexus 870 FT-IR
instrument (MCT-B detector). Sample irradiation was performed using
a Xe arc lamp (300 W, ILC Technology LX300UV). A λ > 237
nm
cutoff filter (Schott glass) was used for one irradiation experiment.
The matrix-isolation apparatus and technique have been described previously.50 (link)−52 (link)
