N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
342
7 IR
7.10 Sulfur Compounds
7.10.1 Thiols and Sulfides
Typical Ranges (v ~ in cm -1 )
Assignment Range
Comments
S–H st
2600–2540
Often weak, narrow. In Raman, strong
S–H δ
915–800
Weak, of no practical significance
C–S st
710–570
Weak, broad, of no practical significance. In Raman, strong
S–S st
≈500
Weak, of no practical significance
Also:
≈2880
≈2860
≈1430
1330–1290
≈1425
815–755
≈630
725–550
(S–)CH 3 st as
(S–)CH 2 st as
(S–)CH 3 δ as
(S–)CH 3 δ sy
(S–)CH 2 δ
S–F st, strong
S–N st in S–N=O
S–C in S– C– – – N, often doublet
Examples (v ~ in cm -1 )
SH
2950
HS
SH 2525
SH
2585
S S
698
668
641
S S
566
S
S
662
%T
400
800
1200
1600
2000
2800
3600
C–S st
S–H st
CH 2 and CH 3 δ