:1,3-Dithiole
{{Chembox
| ImageFile = 1,3-Dithiole.svg
| ImageSize = 100px
| ImageAlt = Structure of 1,3-dithiole
| PIN = 2H-1,3-Dithiole
| OtherNames = 1,3-Dithiacyclopentene
|Section1={{Chembox Identifiers
| CASNo = 288-74-4
| PubChem = 5316944
| ChemSpiderID = 4475898
| StdInChI=1S/C3H4S2/c1-2-5-3-4-1/h1-2H,3H2
| StdInChIKey = IVJFXSLMUSQZMC-UHFFFAOYSA-N
| SMILES = C1SC=CS1
}}
|Section2={{Chembox Properties
| C=3|S=2|H=4
}}
|Section3={{Chembox Hazards
}}
}}
In organosulfur chemistry, 1,3-dithioles are a class of heterocycles based on the parent compound 1,3-dithiacyclopentene (also known as 1,3-dithiole). The ligand dmit2- is a 1,3-dithiole.{{cite journal|author1=Niels Svenstrup |author2=Jan Becher|title=The Organic Chemistry of 1,3-Dithiole-2-thione-4,5-dithiolate (DMIT)|journal=Synthesis|year=1995|volume=1995 |issue=3 |pages=215–235|doi=10.1055/s-1995-3910|s2cid=196762382 }} Heating solutions of Na2dmit gives the isomeric disulfide, a 1,2-dithiole.
