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Antimonides are compounds of antimony with more electropositive elements. The antimonide ion is Sb.
Reduction of antimony by alkali metals or by other methods leads to alkali metal antimonides of various types. Known antimonides include isolated Sb ions , dumbbells Sb2 in Cs4Sb2, discrete antimony chains, for example, Sb6 in SrSb3, infinite spirals n , planar four-membered rings Sb4, Sb7 cages in Cs3Sb, and net shaped anions Sb3 in BaSb3.
Some antimonides are semiconductors, e.g. those of the boron group such as indium antimonide. Many antimonides are flammable or decomposed by oxygen when heated since the antimonide ion is a reducing agent.
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