N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
324
7 IR
N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
324
7 IR
7.7.3 Bromo Compounds
Typical Ranges (v ~ in cm -1 )
Assignment
Range
Comments
C–Br st
700–500
Strong, of medium width; absent in
bromoaromatics
C–Br δ
350–250
Of medium strength and width
Other
1080–1000
Strong, narrow or of medium width;
bromoaromatics
7.7.4 Iodo Compounds
Typical Ranges (v ~ in cm -1 )
Assignment
Range
Comments
C–I st
650–450
Strong, two or more bands
C–I δ
300–50
Of medium strength and width
C–Br st
%T
400
800
1200
1600
2000
2800
3600
C–I st
%T
400
800
1200
1600
2000
2800
3600