Several complexes of disulfur monoxide are known. Most are formed by oxidation peroxide oxidation of a disulfur ligand. In these complexes, the  ligand is invariably bound in an  manner.  Selected examples: , , , , , .
 arises when the dithiocarbamate complex  is oxidized with elemental sulfur in air.  Another way to form these complexes is to combine  complexes with hydrogen sulfide.  Complexes formed in this way are: ; .  With hydrosulfide and a base followed by oxygen,  can be made.