301
6.4.3 31 P Chemical Shifts of Compounds with a P=C or P=N Bond (δ
in ppm relative to H 3 PO 4 )
P N P
P
P
P
P
P
O
P
O
O
7
15
-2
18
15
20
P
P
P N
3
P N
NO 2
7
25
-20
21
32
P
Si
Si
P
P
N
N
290
389
92
P N P
n-C 12 H 27
n-C 12 H 27
6.4 31 P NMR Spectroscopy
6.4.3 31 P Chemical Shifts of Compounds with a P=C or P=N Bond (δ
in ppm relative to H 3 PO 4 )
P N P
P
P
P
P
P
O
P
O
O
7
15
-2
18
15
20
P
P
P N
3
P N
NO 2
7
25
-20
21
32
P
Si
Si
P
P
N
N
290
389
92
P N P
n-C 12 H 27
n-C 12 H 27
6.4 31 P NMR Spectroscopy