Selenidostannates are chemical compounds which contain anionic units of selenium connected to

tin Tin is a chemical element; it has symbol Sn () and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the ...

. They can be considered as stannates where selenium substitutes for oxygen. Similar compounds include the

selenogermanates Selenidogermanates are compounds with anions with selenium bound to germanium. They are analogous with germanate In chemistry, germanate is a compound containing an oxyanion of germanium. In the naming of inorganic compounds it is a suffix that ...

and

thiostannate Sulfidostannates, or thiostannates are chemical compounds containing anions composed of tin linked with sulfur. They can be considered as stannates with sulfur substituting for oxygen. Related compounds include the thiosilicates, and thiogermanate ...

s. They are in the category of chalcogenidotetrelates or more broadly chalcogenometallates.

Formation

Some selenidostannates can be made by treating

tin diselenide Tin is a chemical element; it has symbol Sn () and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the ...

(SnSe₂) with an alkali selenide dissolved in water. Other possible solvents include  

choline chloride Choline chloride is an organic compound with the formula . It is a quaternary ammonium salt, consisting of choline cations () and chloride anions (). It is a bifunctional compound, meaning, it contains both a quaternary ammonium functional group ...

with 1,8-diaminooctane,

Properties

Most selenidostannates are semiconductors. Their resistance drops on exposure to light. Also selenidostannates are often coloured, most often orange, red or yellow. Many are unstable in humid air, as the water reacts with the selenidostannate to form

hydrogen selenide Hydrogen selenide is an inorganic compound with the formula H2Se. This hydrogen chalcogenide is the simplest and most commonly encountered hydride of selenium. H2Se is a colorless, flammable gas under standard conditions. It is the most toxic se ...

(H₂Se).

Use

Selenidostannates are primarily of research interest. They are under investigation as photoelectric materials.

List

References

{{selenides Selenides Tin compounds