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Names | |||
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IUPAC name
nitrogen tribromide
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Identifiers | |||
3D model (
JSmol)
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ChemSpider | |||
PubChem
CID
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CompTox Dashboard (
EPA)
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Properties | |||
NBr3 | |||
Molar mass | 253.7187 g/mol | ||
Appearance | Deep red solid | ||
Melting point | Explodes at -100 °C [1] | ||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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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.
NBr3 was first prepared by reaction of bistrimethylsilylbromamine ( bis(trimethylsilyl)amine bromide) with bromine monochloride (with trimethylsilyl chloride as byproduct) at −87 °C according to the following equation:
where "Me" is a methyl group.
NBr3 can be produced by the reaction of bromine or hypobromite and ammonia in a dilute aqueous buffer solution. [3] It can also be prepared by the reaction of bromine and bromine azide. [4] Ammonia and bromine undergo glow discharge, and after treatment, red NBr3·6NH3 can be obtained. [5] Pure nitrogen NBr3 was only produced in 1975. [6]
Nitrogen tribromide reacts instantly with ammonia in dichloromethane solution at −87 °C to yield NBrH2. [7]
It also reacts with iodine in dichloromethane solution at −87 °C to produce NBr2I, which is a red-brown solid that stable up to -20 °C. [7]
| |||
Names | |||
---|---|---|---|
IUPAC name
nitrogen tribromide
| |||
Identifiers | |||
3D model (
JSmol)
|
|||
ChemSpider | |||
PubChem
CID
|
|||
CompTox Dashboard (
EPA)
|
|||
| |||
| |||
Properties | |||
NBr3 | |||
Molar mass | 253.7187 g/mol | ||
Appearance | Deep red solid | ||
Melting point | Explodes at -100 °C [1] | ||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
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.
NBr3 was first prepared by reaction of bistrimethylsilylbromamine ( bis(trimethylsilyl)amine bromide) with bromine monochloride (with trimethylsilyl chloride as byproduct) at −87 °C according to the following equation:
where "Me" is a methyl group.
NBr3 can be produced by the reaction of bromine or hypobromite and ammonia in a dilute aqueous buffer solution. [3] It can also be prepared by the reaction of bromine and bromine azide. [4] Ammonia and bromine undergo glow discharge, and after treatment, red NBr3·6NH3 can be obtained. [5] Pure nitrogen NBr3 was only produced in 1975. [6]
Nitrogen tribromide reacts instantly with ammonia in dichloromethane solution at −87 °C to yield NBrH2. [7]
It also reacts with iodine in dichloromethane solution at −87 °C to produce NBr2I, which is a red-brown solid that stable up to -20 °C. [7]