Calcium arsenide

Calcium arsenide
Identifiers
CAS Number	39372-67-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	56179;
EC Number	248-169-1;
PubChem CID	25229865;
	InChI InChI=1S/As.Ca Key: GSYZQGSEKUWOHL-UHFFFAOYSA-N;
	SMILES [Ca+2].[As-2][As-2].[Ca+2];
Properties
Chemical formula	CaAs
Molar mass	115.00
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Calcium arsenide is an inorganic compound with the chemical formula Ca₂As₂ and is one of the arsenides of calcium.^[1] It is a hexagonal crystal with a space group of P62m. It is isostructural with sodium peroxide and can be expressed as (Ca²⁺)₂(As-As)⁴⁻.^[2] It reacts with sodium monoarsenide and silicon in a tantalum container to obtain Na₄Ca₂SiAs₄.^[3] It reacts with potassium arsenide, iron arsenide and calcium fluoride at high temperature to obtain KCa₂Fe₄As₄F₂.^[4]

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Identifiers

CAS Number	39372-67-3^Y
3D model (JSmol)	Interactive image
ChemSpider	56179
EC Number	248-169-1
PubChem CID	25229865
InChI InChI=1S/As.Ca Key: GSYZQGSEKUWOHL-UHFFFAOYSA-N
SMILES [Ca+2].[As-2][As-2].[Ca+2]
Properties
Chemical formula	CaAs
Molar mass	115.00
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references