269
Azides. 15 N Chemical Shifts (δ in ppm relative to CH 3 NO 2 )
6.1.8 Nitriles, Isonitriles, Cyanates, Isocyanates, and Thio
Derivatives
Nitriles and Isonitriles. 15 N Chemical Shifts (δ in ppm relative to
CH 3 NO 2 )
Cyanates and Isocyanates. 15 N Chemical Shifts (δ in ppm relative to
CH 3 NO 2 )
– N N + N –
Na +
N N + N –
H 3 C
-130.4
(H 2 O)
-129.7
(C 6 H 6 )
-134.5
(CHCl 3 )
-219.6
(neat)
-222.1
(diethyl ether)
-225
(neat)
-212
(neat)
-333.7
(neat)
-136.6
(CHCl 3 )
-205.1
(neat)
-138.4
(CHCl 3 )
-193.4
(neat)
-140.6
(CHCl 3 )
-182.1
(neat)
-335.5
(neat)
-333.7
(neat)
-346
(cyclohexane)
-365.3
(neat)
-348.6
(neat)
-121.5
(DMSO)
-204.0
(neat)
+69.8
(CDCl 3 )
-280.9 -280.9
-321.2 -171.0
-20.9 -210.7
N
N
N
CH 3 CN
CN
CN
CN
CN
CH 3 NC
NC
NC
NC
NC
OCN
OCN
OCN
CH 3 NCO
HNCO
NCO
NCO
NCO
NCO
6.1 15 N NMR Spectroscopy