Beryllium azide: Difference between revisions
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Beryllium azide (BeN<sub>6</sub> is a compound. |
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| ImageFile = Beryllium azide.svg |
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| IUPACName = Beryllium azide |
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| OtherNames = |
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|Section1={{Chembox Identifiers |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo = 44606-75-9 |
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| ChemSpiderID = 103867673 |
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| PubChem = 129631211 |
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| RTECS = |
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| StdInChI=1S/Be.2N3/c;2*1-3-2/q+2;2*-1 |
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| StdInChIKey = FGTDFEYQGIRFTE-UHFFFAOYSA-N |
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| SMILES = [Be+2].[N-]=[N+]=[N-].[N-]=[N+]=[N-] }} |
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|Section2={{Chembox Properties |
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| Formula={{chem2|Be(N3)2}} |
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| Be=1|N=6 |
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| Appearance = white solid<ref name="Wiberg">{{ cite journal | journal = Zeitschrift für Naturforschung B | volume = 9 | page = 502 | year = 1954 | title = Beryllium azide, Be(N<sub>3</sub>)<sub>2</sub> | first1 = E. | last1 = Wiberg | first2 = M. | last2 = Horst }}</ref> |
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| Density = |
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| MeltingPtC = |
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| Solubility = }} |
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|Section3={{Chembox Hazards |
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| MainHazards = |
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| FlashPt = |
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| AutoignitionPt = |
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| REL = Ca C 0.0005 mg/m<sup>3</sup> (as Be)<ref name=PGCH>{{PGCH|0054}}</ref> |
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| PEL = TWA 0.002 mg/m<sup>3</sup><br/>C 0.005 mg/m<sup>3</sup> (30 minutes), with a maximum peak of 0.025 mg/m<sup>3</sup> (as Be)<ref name=PGCH/> |
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| IDLH = Ca [4 mg/m<sup>3</sup> (as Be)]<ref name=PGCH/> |
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}} |
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{{distinguish|text=[[beryllium nitride]], {{chem2|Be3N2}}}} |
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'''Beryllium azide''', {{chem2|Be(N3)2}}, is an [[inorganic compound]]. It is the [[beryllium]] analog of [[hydrazoic acid]] ({{chem2|HN3}}). |
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==Synthesis== |
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Beryllium azide has been synthesised by the reaction of [[beryllium chloride]] with neat [[trimethylsilyl azide]]:<ref name="Klapötke">{{ cite journal | journal = Main Group Metal Chemistry | year = 1999 | volume = 22 | issue = 6 | pages = 357–360 | title = Synthesis and spectroscopic characterization of beryllium azide and two derivatives | first1 = T. M. | last1 = Klapötke | first2 = T. | last2 = Schutt | doi = 10.1515/MGMC.1999.22.6.357 | s2cid = 101174968 }}</ref> |
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:{{chem2|BeCl2 + 2 [[Methyl|Me]]3SiN3 → Be(N3)2 + 2 Me3SiCl}} |
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Alternatively, [[dimethylberyllium]] reacts with hydrazoic acid in dry [[diethyl ether]] at −116 °C:<ref name="Wiberg" /> |
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:{{chem2|Be(CH3)2 + 2 HN3 → Be(N3)2 + 2 CH4}} |
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==Structure== |
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[[Infrared spectroscopy|Infrared]] and [[Raman spectroscopy|Raman]] spectra suggest that beryllium azide consists of infinite chains, with [[tetrahedral molecular geometry|tetrahedrally]] coordinated beryllium(II) atoms [[covalent bond|covalently]] bridged by one end of the [[azide]] units.<ref name="Klapötke" /> |
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==References== |
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{{reflist}} |
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{{Beryllium compounds}} |
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{{Azides}} |
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{{DEFAULTSORT:Beryllium Azide}} |
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[[Category:Azides]] |
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[[Category:Beryllium compounds]] |
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{{inorganic-compound-stub}} |
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Latest revision as of 20:40, 20 November 2024
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| Names | |
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| IUPAC name
Beryllium azide
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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 | |
| 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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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 Me3SiN3 → 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.1999.22.6.357. S2CID 101174968.
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