Promethium(III) chloride

Promethium(III) chloride
	Glowing powder mixture of promethium(III) chloride and zinc sulfide
	Crystal structure
Names
	Other names Promethium chloride; Promethium trichloride
Identifiers
CAS Number	13779-10-7;
3D model (JSmol)	Interactive image;
ChemSpider	14296263;
ECHA InfoCard	100.034.004
EC Number	237-420-0;
PubChem CID	14475784;
	InChI InChI=1S/3ClH.Pm/h3*1H;/q;;;+3/p-3 Key: KAKNBYVEBALXNX-UHFFFAOYSA-K;
	SMILES [Cl-].[Cl-].[Cl-].[Pm+3];
Properties
Chemical formula	Cl3Pm
Molar mass	251 g·mol−1
Appearance	purple solid; yellow solid
Density	4.19 g/cm3 (calc., XRD)
Melting point	655 °C (1,211 °F; 928 K)
Structure
Crystal structure	Trigonal, hP8
Space group	P63/m, No. 176
Related compounds
Other anions	Promethium(III) oxide
Other cations	Neodymium(III) chloride, Samarium(III) chloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Promethium(III) chloride is a chemical compound of promethium and chlorine with the formula PmCl₃. It is an ionic, water soluble, crystalline salt that glows in the dark with a pale blue or green light due to promethium's intense radioactivity.