Английская Википедия:Bismuth(III) sulfide

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Шаблон:Chembox Bismuth(III) sulfide (Шаблон:Chem2) is a chemical compound of bismuth and sulfur. It occurs in nature as the mineral bismuthinite.

Synthesis

Bismuth(III) sulfide can be prepared by reacting a bismuth(III) salt with hydrogen sulfide:

Шаблон:Chem2

Bismuth (III) sulfide can also be prepared by the reaction of elemental bismuth and elemental sulfur in an evacuated silica tube at 500 °C for 96 hours.

Шаблон:Chem2

Properties

Bismuth(III) sulfide is isostructural with stibnite (stibnite is one of the forms of antimony(III) sulfide). Bismuth atoms are in two different environments, both of which have 7 coordinate Bismuth atoms, 4 in a near planar rectangle and three more distant making an irregular 7-coordination group.[1]

It can react with acids to produce the odoriferous hydrogen sulfide gas.

Bismuth(III) sulfide may be produced in the body by the reaction of the common gastrointestinal drug bismuth subsalicylate with naturally occurring sulfides; this causes temporary black tongue when the sulfides are in the mouth and black feces when the sulfides are in the colon.

Uses

It is used as a starting material to produce many other bismuth compounds.[2]

References

  1. Wells A.F. (1984) Structural Inorganic Chemistry, 5th edition Oxford Science Publications, Шаблон:ISBN
  2. Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, Шаблон:ISBN

Шаблон:Bismuth compounds Шаблон:Sulfides