Samarium hexaboride

Samarium hexaboride
Identifiers
CAS Number	12008-30-9;
3D model (JSmol)	Interactive image;
ChemSpider	58803190;
ECHA InfoCard	100.031.384
EC Number	234-536-3;
PubChem CID	133108844;
	InChI InChI=1S/6B.Sm Key: IYKQPDWKORWUNW-UHFFFAOYSA-N;
	SMILES [B].[B].[B].[B].[B].[B].[Sm];
Properties
Chemical formula	B6Sm
Molar mass	215.22 g·mol−1
Melting point	2400 °C ±100
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Samarium hexaboride (SmB₆) is an intermediate-valence compound where samarium is present both as Sm²⁺ and Sm³⁺ ions at the ratio 3:7. It is a Kondo insulator having a metallic surface state.

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