Antimonide

Antimonides (sometimes called stibnides or stibinides) 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 Sb4−2 in Cs₄Sb₂, discrete antimony chains, for example, Sb8−6 in SrSb₃, infinite spirals (Sb⁻)_n (in NaSb, RbSb), planar four-membered rings Sb2−4, Sb3−7 cages in Cs₃Sb, and net shaped anions Sb2−3 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.

References

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

v t e Monatomic anion compounds
Group 1	H⁻
Group 13	B Al Ga In Tl
Group 14	C Si Ge Sn Pb
Group 15 (Pnictides)	N³⁻ P³⁻ As³⁻ Sb³⁻ Bi³⁻
Group 16 (Chalcogenides)	O²⁻ S²⁻ Se²⁻ Te²⁻ Po²⁻
Group 17 (Halides)	F⁻ Cl⁻ Br⁻ I⁻ At⁻

References

See also