262
Carbonyl derivatives. 15 N Chemical Shifts (δ in ppm relative to
CH 3 NO 2 )
Thiocarbonyl derivatives. 15 N Chemical Shifts (δ in ppm relative to
CH 3 NO 2 )
N
H
O
NH 2
O
O
N
O
H 2 N
NH 2
O
N
N
O
N
H
O
O
N
H
O
O
-314.2
(CHCl 3 )
-230.0
(CDCl 3 )
-272.2 (DMSO)
-278.6 (CHCl 3 )
-284.4 (DMSO)
-283.1 (CHCl 3 )
-272.8 -250.7 (DMSO)
-245.2
(CDCl 3 )
-269.8
(CDCl 3 )
-244.3
(CDCl 3 )
-234.9
(CHCl 2 CHCl 2 )
-305.3
(DMSO)
-305.0
(DMSO)
-304.1
(DMSO)
-317.3
(DMSO)
-204.1
(DMSO)
-283.5
(DMSO)
-236.1
(acetone)
-199
(neat)
O
NH 2
O
O
N
H
O
N
O
O
NH 2
S
N
S
O
N
S
N
N
S
H 2 N
NH 2
S
N
H
NH 2
S
H 2 N
S
NH 2
S
S
N
S
-266.0
(DMSO)
-263.5
(DMSO)
-237.6
(acetone)
-265.1
(acetone)
-261.1
(CCl 4 )
N
H
O
N
H
O
N
H
O
N
H
O
N
H
O
N
H
O
-279.3 (DMSO)
-244.5 (DMSO)
-280.1 (CDCl 3 )
-278.3
N
O
O
NH
HN
Heteronuclear NMR Spectroscopy
6