| Abstract
| - Photolysis (254 nm) of CF3N3 in pentane at 6−10 K produced a persistent electron paramagnetic resonancespectrum typical of a triplet nitrene centered at 8620 G. The spectrum (|D/hc| = 1.736 cm-1) is attributed totriplet CF3−N, and is very similar to that of triplet NH (|D/hc| = 1.863 cm-1) and CH3-N (|D/hc| = 1.720cm-1) which were reported previously. CF3N3 was also deposited in an argon matrix at 14 K. The azide (λmax= 257 nm) was decomposed by exposure to 254 nm light with the concurrent formation of sharp, structuredabsorption bands at 342, 347.5, and 354 nm. The UV bands are assigned to the triplet nitrene CF3N on thebasis of its similarity to the spectrum of CH3N and time-dependent density functional theory (B3LYP)calculations.
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