Antimonides (sometimes called stibnides) are compounds of antimony with more electropositive elements. The antimonide ion is Sb3−.

Reduction of antimony by alkali metals or by other methods leads to alkali metal antimonides of various types.[1] Known antimonides include isolated Sb3− ions (in Li3Sb, Na3Sb), dumbbells Sb24− in Cs4Sb2, discrete antimony chains, for example, Sb68− in SrSb3, infinite spirals (Sb)n (in NaSb, RbSb), planar four-membered rings Sb42−, Sb73− cages in Cs3Sb, and net shaped anions Sb32− 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.


  1. ^ King, R. Bruse (2005). Encyclopedia of Inorganic Chemistry, Second Edition (10 Volume Set) (2nd ed.). Wiley. p. 211. ISBN 9780470860786.

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