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In chemistry, antimonite refers to a salt of antimony(III), such as NaSb(OH)₄ and NaSbO₂ (meta-antimonite), which can be prepared by reacting alkali with antimony trioxide, Sb₂O₃. These are formally salts of antimonous acid, Sb(OH)₃, whose existence in solution is dubious. Attempts to isolate it generally form Sb₂O₃·xH₂O, antimony(III) oxide hydrate, which slowly transforms into Sb₂O₃.

In geology, the mineral stibnite, Sb₂S₃, is sometimes called antimonite.

Antimonites can be compared to antimonates, which contain antimony in the +5 oxidation state.

References

1. ^ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5
2. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

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