Compounds having the structure acyl-S-acyl. Also called diacylsulfanes, e.g. CH3C(=O)SC(=S)CH2CH3 acetic thiopropanoic thioanhydride.
See:
acyl groups
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1372 [Terms] [Paper]