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preface to fifteenth edition

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SPECTROSCOPY 7.59<br />

TABLE 7.26<br />

Absorption Frequencies of Miscellaneous Bands (Continued)<br />

Group Band,cm 1 Remarks<br />

Sulfur compounds<br />

Thiols<br />

9S9H<br />

9CO9SH<br />

9CS9SH<br />

Thiocarbonyl<br />

C"S<br />

N9C"S<br />

9S9C"S<br />

2600–2450 (w)<br />

840–830 (m)<br />

ca 860 (s)<br />

1200–1050 (s)<br />

1570–1395<br />

1420–1260<br />

1140–940<br />

ca 580 (s)<br />

Broad<br />

Behaves generally in manner similar <strong>to</strong><br />

carbonyl band<br />

Sulfoxides<br />

S"O 1075–1040 (vs) Halogen or oxygen a<strong>to</strong>m bonded <strong>to</strong> sulfur<br />

increases the frequency.<br />

730–690 (var)<br />

395–360 (var)<br />

Sulfones<br />

SO 2<br />

1360–1290 (vs) Halogen or oxygen a<strong>to</strong>m bonded <strong>to</strong> sulfur<br />

increases the frequency.<br />

1170–1120 (vs)<br />

610–545 (m–s)<br />

525–495 (m–s)<br />

Sulfonamides<br />

9SO 2<br />

9N<br />

Sulfonates<br />

9SO 2 9O9<br />

Thiosulfonates<br />

9SO 2 9S9<br />

Sulfates 9O9SO 2 9O9<br />

Primary alkyl salts<br />

Secondary alkyl salts<br />

1380–1330 (vs)<br />

1170–1140 (vs)<br />

950–860 (m)<br />

715–700 (w–m)<br />

1420–1330 (s)<br />

1200–1145 (s)<br />

ca 1340 (vs)<br />

1415–1380 (s)<br />

1200–1185 (s)<br />

1315–1220 (s)<br />

1140–1075 (m)<br />

1270–1210 (vs)<br />

1075–1050 (s)<br />

May appear as doublet<br />

Electronegative substituents increase<br />

frequencies.<br />

Strongly influenced by metal ion<br />

Doublet; both bands strongly influenced<br />

by metal ion

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