Calcium selenide (CaSe) is a

chemical compound A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...

consisting of the elements

calcium Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar t ...

and

selenium Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, ...

in equal

stoichiometric Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions. Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equ ...

ratio.

Preparation and properties

Calcium selenide can be prepared via the reaction of

and H₂Se in liquid NH₃. : Ca + H₂Se = CaSe + H₂ Calcium selenide reacts with

indium(III) selenide Indium(III) selenide is a compound of indium and selenium. It has potential for use in photovoltaic devices and it has been the subject of extensive research. The two most common phases, α and β, have a layered structure, while γ is a "defect ...

in vacuum at high temperature to give CaIn₂Se₄.Yagubov, N. I.; Guliev, T. N.; Rustamov, P. G.; Chiragov, M. I.; Safarov, V. G. Preparation and study of the properties of calcium indium selenide, CaIn2Se4. ''Zhurnal Neorganicheskoi Khimii'', 1988. 33 (6): 1387-1389. : CaSe + In₂Se₃ = CaIn₂Se₄

References

{{Selenides Selenides Calcium compounds Rock salt crystal structure