N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
364
7 IR
N
H
N
H
O
solid: 1622
1580
1530
in CHCl 3 :
1663
1548
N
N
O
solid: 1645
1560
1497
in CHCl 3 :
1675
N
N
O
H
H
solid:
1650
N
H
N H 2
O
O
solid:
1667
1634
NH
HN
O
in CCl 4 : 1735
1718
N H
H N
O
O
solid: 1776
1697
NH
N
O
O
solid:
1712
1676
N
HN
O
O
solid: 1748
1706
HN
NH
O
O
solid: 1767
1695
N
N
NH
neat:
1600
NH
HN
NH
solid: 1767
1681
1621
HS
O
S
gas: 2593
2548
neat: 2470
H S
O
S
in CS 2 :
2562
2522
O
O
S
solid: 1212
O
O
S
solid: 1234
H 2 N
NH 2
S
solid:
1400
N
N
S
solid: 1130
N
N
S
solid:
1131