Some inorganic selenide sulfide compounds are also known.  Simplest is the material selenium sulfide, which has medicinal properties. It adopt the diverse structures of elemental sulfur but with some S atoms replaced by Se.
Other inorganic selenide sulfide compounds occur as minerals and as pigments.  One example is antimony selenosulfide.
The pigment cadmium red consists of cadmium sulfoselenide.  It is a solid solution of cadmium sulfide, which is yellow, and cadmium selenide, which is dark brown. It is used as an artist's pigment.  Unlike the organic selenosulfides and unlike selenide sulfide itself, no S-Se bond exists in CdSSe or in SbSSe.