Praseodymium hexaboride

Praseodymium hexaboride is a binary inorganic compound of praseodymium and boron with the formula PrB₆. It forms black crystals that are insoluble in water.

Praseodymium hexaboride

Names
Other names Praseodymium boride
Identifiers
CAS Number	12008-27-4 Y
3D model (JSmol)	Interactive image
ChemSpider	62852859 N
ECHA InfoCard	100.031.382
EC Number	234-534-2
PubChem CID	170843463
CompTox Dashboard (EPA)	DTXSID601311387
InChI InChI=1S/6B.Pr Y Key: QHGDJAMSTQXPDI-UHFFFAOYSA-N Y
SMILES [B].[B].[B].[B].[B].[B].[Pr]
Properties
Chemical formula	PrB6
Molar mass	205.77 g/mol
Appearance	black crystals
Density	4.84 g/cm3
Melting point	2610 °C
Structure
Crystal structure	Cubic
Space group	Pm3m ; Oh
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Preparation

Praseodymium hexaboride can be prepared from the reaction of stoichiometric quantities of praseodymium and boron:

Pr + 6B → PrB₆

Properties

Praseodymium hexaboride forms black crystals of the cubic crystal system, with space group Pm3m, cell parameters a = 0.4129 nm, Z = 1, and structure isotypical with calcium hexaboride. The compound melts congruently at 2610 °C. At temperatures below 7 K, a magnetic transition to an antiferromagnetic state occurs in the compound. It does not dissolve in water.

Uses

Praseodymium hexaboride is used as a component of alloys for cathodes of high-power electronic devices.