Thioketone
![General formula of a thioketone](/Images/godic/202502/16/Thioketone_Structural_Formulae_V.10323.png")
![Solution and solid samples of thiobenzophenone. The blue color is consistent with a small HOMO-LUMO gap associated with the thiocarbonyl functional group.](/Images/godic/202502/16/Ph2CS0323.JPG")
Thioketones (also known as thiones or thiocarbonyls) are organosulfur compounds related to conventional ketones. Instead of the formula R2C=O, thioketones have the formula R2C=S, which is reflected by the prefix "thio-" in the name of the functional group. Unhindered alkylthioketones typically tend to form polymers or rings.