N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
325
7.8 Alcohols, Ethers, and Related Compounds
325
7.8 Alcohols, Ethers, and Related Compounds
7.8.1 Alcohols and Phenols
Alcohols
Phenols
Typical Ranges (v ~ in cm -1 )
Assignment
Range
Comments
O–H st
3650–3200
Of variable intensity. In Raman, generally weak
Subranges:
3650–3590
Free OH; sharp
3550–3450
H-bonded OH; broad
3500–3200
Polymer OH; broad, often numerous bands
Beyond normal range:
3200–2500
Enols, chelates; often very broad
In the same range: NH st, – – – – – CH st (≈3300, sharp), H 2 O
O–H δ ip
1450–1200
Medium, of no practical significance
%T
400
800
1200
1600
2000
2800
3600
O–H st
C–O st
C–O–H δ
N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
%T
400
800
1200
1600
2000
2800
3600
O–H st
C–O st
C–O–H δ