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Nitrogen tribromide
Names
	IUPAC name nitrogen tribromide
Identifiers
CAS Number	15162-90-0;
3D model (JSmol)	Interactive image;
ChemSpider	20480821;
PubChem CID	3082084;
CompTox Dashboard (EPA)	DTXSID90164822 ;
	InChI InChI=1S/3BrH.N/h3*1H;/p-3;
	SMILES N(Br)(Br)Br;
Properties
Chemical formula	NBr3
Molar mass	253.7187 g/mol
Appearance	Deep red solid
Melting point	Explodes at -100 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Nitrogen tribromide is a chemical compound with the formula NBr₃. It is extremely explosive in its pure form, even at -100 °C, and was not isolated until 1975.^[2] It is a deep-red and volatile solid.

Preparation

NBr₃ was first prepared by reaction of bistrimethlysilylbromamine (bis(trimethylsilyl)amine bromide) with bromine monochloride (with trimethylsilyl chloride as byproduct) at -87 °C according to the following equation:

(Me₃Si)₂NBr + 2 BrCl -> NBr₃ + 2

where "Me" is a methyl group. It reacts instantly with ammonia in dichloromethane solution at -87 °C to yield NBrH₂.

References

^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4-73, ISBN 0-8493-0594-2
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 439. ISBN 978-0-08-037941-8.