Sodium thioantimoniate or sodium tetrathioantimonate is an inorganic compound with the formula Na3SbS4. The nonahydrate of this chemical, Na3SbS4·9H2O, is known as Schlippe's salt, named after Johann
Anhydrous NaSbS3 has a complicated structure featuring SbS4− tetrahedra interconnected by Na-S bonds. Color scheme: red = Sb, yellow = S, violet = Na.