|  | Chapter 15 : Alcohols, 
        Diols and Thiols |  | 
  
 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.
    
  
     
      | Thiol |   |  | 
     
      | Sulfide |   |  | 
     
      | Disulfide |   |  | 
     
      | Sulfenic acid |   |  | 
     
      | Sulfinic acid |   |  | 
     
      | Sulfonic acid |   |  | 
     
      | Sulfonate ester |   |  | 
     
      | Sulfoxide |   |  | 
     
      | Sulfone |   |  |