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List of Sulfur Functional Groups

The more important sulfur containing functional groups are shown below. It's useful to remember that S is in the same group but just below O in the periodic table. This means there is some similarity in the functional groups of S and O. In each case, the functional group name, a diagram of the key structural element and a 3D JSMOL image of a simple example.

Sulfenic acid
Sulfinic acid
Sulfonic acid
Sulfonate ester

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© Dr. Ian Hunt, Department of Chemistry, University of Calgary