268
Nitrites and Nitrates. 15 N Chemical Shifts (δ in ppm relative to
CH 3 NO 2 )
6.1.7 Compounds with Nitrogen-Nitrogen Multiple Bonds
Azo- and Azoxy Compounds. 15 N Chemical Shifts (δ in ppm relative
to CH 3 NO 2 )
Diazo and Diazonium Compounds. 15 N Chemical Shifts (δ in ppm
relative to CH 3 NO 2 )
N +
N
O –
N
N
HNO 3
NaNO 3
NaNO 2
O
NO
O
NO 2
+231.7
(D 2 O)
+207.1
(DMSO)
-37.1
(DMSO)
+129.0
(CDCl 3 )
(CDCl 3 )
(CDCl 3 )
-73.0
(dimethyl glycol)
-46.7
-54.1
+146.5
(CDCl 3 )
-10.2
(acetic acid)
-42.5 (neat)
-4.4 (H 2 O, 1 M)
N N
N + N
– O
N +
N +
O –
O –
H 2 C N + N –
N + N BF 4
–
-96.0 +7.8
(diethyl ether)
-149.8 -66.4
(CH 3 CN)
-112.6 +3.7
(CDCl 3 )
N +
N –
O
O
H
-36.0
-19.8
Heteronuclear NMR Spectroscopy
6