Calcium monosilicide (
Ca Si) is an inorganic compound, a
silicide
A silicide is a type of chemical compound that combines silicon and a (usually) more electropositive element.
Silicon is more electropositive than carbon. Silicides are structurally closer to borides than to carbides.
Similar to borides and carb ...
of
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 ...
. It can be prepared by reacting elemental calcium and silicon at temperatures above 1000 °C.
[Brauer, Georg (1975) ''Handbuch der Präparativen Anorganischen Chemie''. Stuttgart. Vol. 1. p. 933. .] It is a
Zintl phase
In chemistry, a Zintl phase is a product of a reaction between a group 1 (alkali metal) or group 2 ( alkaline earth metal) and main group metal or metalloid (from groups 13, 14, 15, or 16). It is characterized by intermediate metallic/ ionic bond ...
, where silicon has oxidation state −2 and covalence 2.
References
{{Silicides
Alkaline earth silicides
Calcium compounds