Caesium monoxide

Caesium oxide
	; Caesium cations, Cs+ Oxide anions, O2−
Names
	IUPAC name Caesium oxide
	Other names Cesium oxide (US)
Identifiers
CAS Number	20281-00-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	8079519 ;
ECHA InfoCard	100.039.693
EC Number	243-679-0;
PubChem CID	9903865;
	InChI InChI=1S/2Cs.O/q2+1;-2 Key: KOPBYBDAPCDYFK-UHFFFAOYSA-N ; InChI=1/2Cs.O/q2+1;-2 Key: KOPBYBDAPCDYFK-UHFFFAOYAW;
	SMILES [Cs+].[Cs+].[O-2];
Properties
Chemical formula	Cs2O
Molar mass	281.810 g·mol−1
Appearance	Yellow-orange solid
Density	4.65 g/cm3, solid
Melting point	490 °C (914 °F; 763 K) (under N2)
Solubility in water	Reacts to form CsOH
Magnetic susceptibility (χ)	1534.0·10−6 cm3/mol
Structure
Crystal structure	anti-CdCl2 (hexagonal)
Thermochemistry
Heat capacity (C)	76.0 J/(K·mol)
Std molar; entropy (S⦵298)	146.9 J/(K·mol)
Std enthalpy of; formation (ΔfH⦵298)	−345.8 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Corrosive
	GHS labelling:
Pictograms
NFPA 704 (fire diamond)	3 0 2 W
Flash point	non-flammable
Related compounds
Other anions	Caesium sulfide; Caesium selenide; Caesium telluride; Caesium polonide;
Other cations	Lithium oxide; Sodium oxide; Potassium oxide; Rubidium oxide;
Related caesium oxides	Caesium suboxide; Caesium peroxide; Caesium sesquioxide; Caesium superoxide; Caesium ozonide;
Related compounds	Caesium hydroxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Caesium monoxide or caesium oxide is an chemical compound with the chemical formula Cs₂O. It is the simplest and most common oxide of the caesium. It forms yellow-orange hexagonal crystals.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.