N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
337
7.9 Nitrogen Compounds
337
7.9.5 Nitriles and Isonitriles
Nitriles
Isonitriles
Typical Ranges (v ~ in cm -1 )
Assignment
Range
Comments
C– – – N st
2260–2240
Medium to strong, sharp; for O–CH 2 –C– – – N,
N–CH 2 –C– – – N: of low intensity or absent.
In Raman, of medium to high intensity
Beyond normal range:
2240–2215
C=C–C– – – N
2240–2215
C N
2240–2230
≈2275
XC–C – – – N, X: Cl, Br, I
–CF 2 –C– – – N
2225–2175
N C N
N C N
+
–
2210–2185
>N–C=C–C– – – N
2200–2070
C– – – N –
–N + – – – C –
2150–2110
Strong
C N st
%T
400
800
1200
1600
2000
2800
3600
–N C st
%T
400
800
1200
1600
2000
2800
3600
–
+
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
337
7.9 Nitrogen Compounds
337
7.9.5 Nitriles and Isonitriles
Nitriles
Isonitriles
Typical Ranges (v ~ in cm -1 )
Assignment
Range
Comments
C– – – N st
2260–2240
Medium to strong, sharp; for O–CH 2 –C– – – N,
N–CH 2 –C– – – N: of low intensity or absent.
In Raman, of medium to high intensity
Beyond normal range:
2240–2215
C=C–C– – – N
2240–2215
C N
2240–2230
≈2275
XC–C – – – N, X: Cl, Br, I
–CF 2 –C– – – N
2225–2175
N C N
N C N
+
–
2210–2185
>N–C=C–C– – – N
2200–2070
C– – – N –
–N + – – – C –
2150–2110
Strong
C N st
%T
400
800
1200
1600
2000
2800
3600
–N C st
%T
400
800
1200
1600
2000
2800
3600
–
+