A indide is an inorganic chemical compound containing anions composed of indium atoms. Indium is right of the Zintl border in the periodic table, so indides are not Zintl compounds. They are a kind of intermetallic compound.
Related compounds include the thallides and gallides.
Indides contain clusters of indium atoms. There are compounds with 4, 5, 6, 8 11 atoms.[1] Four-atom clusters are tetrahedral and have interatomic distance of 3.171 Å, more dense than in indium metal.[2]