Vanadium nitride

Vanadium nitride, VN, is a chemical compound of vanadium and nitrogen.

Vanadium nitride

Names
IUPAC name Vanadium nitride
Other names Vanadium(III) nitride
Identifiers
CAS Number	24646-85-3 Y
3D model (JSmol)	Interactive image
ChemSpider	81776
ECHA InfoCard	100.042.151
EC Number	246-382-4
PubChem CID	90570
InChI InChI=1S/N.V Key: SKKMWRVAJNPLFY-UHFFFAOYSA-N
SMILES [N].[V]
Properties
Chemical formula	VN
Molar mass	64.9482 g/mol
Appearance	black powder
Density	6.13 g/cm3
Melting point	2,050 °C (3,720 °F; 2,320 K)
Structure
Crystal structure	cubic, cF8
Space group	Fm3m, No. 225
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H312, H332
Precautionary statements	P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P312, P322, P330, P363, P501
Flash point	Non-flammable
Related compounds
Other anions	vanadium(III) oxide, vanadium carbide
Other cations	titanium nitride, chromium(III) nitride, niobium nitride
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

Vanadium nitride is formed during the nitriding of steel and increases wear resistance.^[1] Another phase, V₂N, also referred to as vanadium nitride, can be formed along with VN during nitriding.^[2] VN has a cubic, rock-salt structure. There is also a low-temperature form, which contains V₄ clusters.^[3] The low-temperature phase results from a dynamic instability, when the energy of vibrational modes in the high-temperature NaCl-structure phase, are reduced below zero.^[4]

It is a strong-coupled superconductor.^[5] Nanocrystalline vanadium nitride has been claimed to have potential for use in supercapacitors.^[6] The properties of vanadium nitride depend sensitively on the stoichiometry of the material.^[7]