265
6.1.5 Compounds with C=N Bonds
Imines und Nitrones. 15 N Chemical Shifts (δ in ppm relative to
CH 3 NO 2 )
Oximes. 15 N Chemical Shifts and Coupling Constants (δ in ppm
relative to CH 3 NO 2 , J in Hz)
Hydrazones. 15 N Chemical Shifts (δ in ppm relative to CH 3 NO 2 )
N
N
H
N
N
N
N
N
H -32.3
(neat)
-2.2
(H 2 O)
-73.9 (DMSO)
-80.2 (CHCl 3 )
-56.9 (neat)
-62.1 (CHCl 3 )
-53.0
(CHCl 3 )
-27.5
(neat)
-25.9
(neat)
-25.3
(neat)
-54.0
(DMSO)
-287.5
-290.8
-237.0
-274.7
-26.3
(CHCl 3 )
-34.2
(CHCl 3 )
-106.0
(DMSO)
-34.6
(CHCl 3 )
-30.3
(CHCl 3 )
-45.9
(CHCl 3 )
N
H
H
OH
N
H
OH
N
H
OH
N
OH
N
OH
N
OH
N
N
-24.4
(neat)
-279.8
N
N
H
N
N
H
N +
O –
3 J NH -4.0
3 J NH -2.2
N
H
OH
6.1 15 N NMR Spectroscopy