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The structure of Sb 2 O 3 depends on the temperature of the sample. Dimeric Sb 4 O 6 is the high temperature (1560 °C) gas. [10] Sb 4 O 6 molecules are bicyclic cages, similar to the related oxide of phosphorus(III), phosphorus trioxide. [11] The cage structure is retained in a solid that crystallizes in a cubic habit.
The melting point of Sb 2 S 3 is 823 K (550 °C; 1,022 °F). [9] The band gap is 1.88 eV at room temperature and it is a photoconductor. [10] Stibnite is also toxic upon ingestion, with symptoms similar to those of arsenic poisoning. [11]
Structure of (PhSb) 6 [5] Distibines are formally Sb II compounds, but feature tricoordinate Sb atoms with a single Sb-Sb bond. They may have interest as thermochromes.For example, tetramethyldistibine is colorless when gas, yellow when liquid, red when solid just below the melting point of 18.5 °C, shiny-blue when cooler, and again yellow at cryogenic temperatures.
2 Sb + 3 S → Sb 2 S 3. Sb 2 S 3 is precipitated when H 2 S is passed through an acidified solution of Sb(III). [9] This reaction has been used as a gravimetric method for determining antimony, bubbling H 2 S through a solution of Sb(III) compound in hot HCl deposits an orange form of Sb 2 S 3 which turns black under the reaction conditions. [10]
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The antimonide ion is Sb 3− but the term refers also to any anionic derivative of antimony. [1] Antimonides are often prepared by heating the elements. [2] The reduction of antimony by alkali metals or by other methods leads to alkali metal antimonides of various types. [3] Known antimonides include isolated Sb 3− ions (in Li 3 Sb and Na 3 Sb).
Doping Sb 2 Te 3 with iron introduces multiple Fermi pockets, in contrast to the single frequency detected for pure Sb 2 Te 3, and results in reduced carrier density and mobility. [ 9 ] Sb 2 Te 3 forms the pseudobinary intermetallic system germanium-antimony-tellurium with germanium telluride , GeTe.
Antimony(III) acetate is the compound of antimony with the chemical formula of Sb(CH 3 CO 2) 3. It is a white powder, is moderately water-soluble, and is used as a catalyst in the production of polyesters .