Calcium nitride

Calcium nitride

Chembox new
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IUPACName = Calcium nitride
OtherNames = tricalcium dinitride
Section1 = Chembox Identifiers
CASNo = 12013-82-0
PubChem = 736837
EINECS = 234-592-9
SMILES =

Section2 = Chembox Properties
Ca = 3 | N = 2
Formula =
MolarMass =
Appearance = red-brown crystalline solid
Density = 2670 kg m-3
MeltingPtC = 1195
BoilingPt =
Solubility =

Section3 = Chembox Hazards
MainHazards =
FlashPt =
Autoignition =

Calcium nitride is a red-brown, crystalline solid made up of calcium and nitrogen. Its chemical formula is Ca3N2. [citation|title=Concise Encyclopedia Chemistry|author= Mary Eagleson|year= 1994|publisher=Walter de Gruyter|url= http://books.google.com/books?vid=ISBN3110114518&id=Owuv-c9L_IMC&pg=PA160&lpg=PA160&ots=zUvZ-shMj9&dq=%22Calcium+nitride%22&ie=ISO-8859-1&output=html&sig=RdkdyoTgAisqrZokvh5NGfjylik|id=ISBN 3110114518] α-Calcium nitride is the commonly encountered form and this has an anti-bixbyite structure and is similar to Mn2O3 except that the positions of the ions are reversed, calcium (Ca2+) take the oxide (O2−) positions and nitride ions (N3−) the manganese (Mn3+). Calcium nitride is formed along with the oxide, CaO, when calcium burns in air. It can be produced by direct reaction of the elements: 3Ca + N2 → Ca3N2

It reacts with moisture in air to give ammonia and calcium hydroxide:

Ca3N2+ 6H2O → 3Ca(OH)2 + 2NH3 It absorbs hydrogen above 350oC: [ Heyns A. M.,Prinsloo L. C., Range K.J.,Stassen M. J. solid state chem. 1998, vol. 137, 1, 33]

Ca3N2 + 2H2 → 2CaNH + CaH2

General references

*Greenwood&Earnshaw

Footnotes

External links

* [http://www.webelements.com/webelements/compounds/text/Ca/Ca3N2-12013820.html WebElements entry]


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