Manganese monosilicide

Manganese monosilicide
	MnSi prepared by zone melting
	Structures of left-handed and right-handed MnSi crystals (3 presentations, with different numbers of atoms per unit cell)
Names
	IUPAC name Manganese silicide
Identifiers
CAS Number	12626-89-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	129548924;
PubChem CID	49854137;
	InChI InChI=1S/Mn.Si Key: PYLLWONICXJARP-UHFFFAOYSA-N;
	SMILES [Si].[Mn];
Properties
Chemical formula	MnSi
Molar mass	83.023 g/mol
Density	5.16
Melting point	1,280 °C (2,340 °F; 1,550 K)
Magnetic susceptibility (χ)	31.3×10−6 emu/g
Thermal conductivity	0.1 W/(cm·K)
Structure
Crystal structure	Cubic
Space group	P213 (No. 198), cP8
Lattice constant	a = 0.45598(2) nm
Formula units (Z)	4
Hazards
Flash point	Non-flammable
Related compounds
Other anions	Manganese germanide
Other cations	Iron silicide; Cobalt silicide
Related compounds	Manganese disilicide; Mn5Si3; Mn3Si; Mn11Si9
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Manganese monosilicide (MnSi) is an intermetallic compound, a silicide of manganese. It occurs in cosmic dust as the mineral brownleeite. MnSi has a cubic crystal lattice with no inversion center; therefore its crystal structure is helical, with right-hand and left-hand chiralities.

MnSi is a paramagnetic metal that turns into a ferromagnet at cryogenic temperatures below 29 K. In the ferromagnetic state, the spatial arrangement of electron spins in MnSi changes with magnetic field, forming helical, conical, skyrmion, and regular ferromagnetic phases.