Beryllium azide
From Wikipedia, the free encyclopedia
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| IUPAC name
Beryllium azide
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| Identifiers | |
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3D model (JSmol)
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| ChemSpider | |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Be(N3)2 | |
| Molar mass | 93.054 g·mol−1 |
| Appearance | white solid[1] |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 0.002 mg/m3 C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[2] |
REL (Recommended)
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Ca C 0.0005 mg/m3 (as Be)[2] |
IDLH (Immediate danger)
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Ca [4 mg/m3 (as Be)][2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Not to be confused with beryllium nitride, Be3N2.
Beryllium azide, Be(N3)2, is an inorganic compound. It is the beryllium analog of hydrazoic acid (HN3).
Synthesis
[edit ]Beryllium azide has been synthesised by the reaction of beryllium chloride with neat trimethylsilyl azide:[3]
- BeCl2 + 2 Me 3SiN3 → Be(N3)2 + 2 Me3SiCl
Alternatively, dimethylberyllium reacts with hydrazoic acid in dry diethyl ether at −116 °C:[1]
- Be(CH3)2 + 2 HN3 → Be(N3)2 + 2 CH4
Structure
[edit ]Infrared and Raman spectra suggest that beryllium azide consists of infinite chains, with tetrahedrally coordinated beryllium(II) atoms covalently bridged by one end of the azide units.[3]
References
[edit ]- ^ a b Wiberg, E.; Horst, M. (1954). "Beryllium azide, Be(N3)2". Zeitschrift für Naturforschung B. 9: 502.
- ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b Klapötke, T. M.; Schutt, T. (1999). "Synthesis and spectroscopic characterization of beryllium azide and two derivatives". Main Group Metal Chemistry. 22 (6): 357–360. doi:10.1515/MGMC.1999226.357. S2CID 101174968.
