1-Diazidocarbamoyl-5-azidotetrazole

{{Chembox

| Name =

| ImageFile = 1-Diazidocarbamoyl-5-azidotetrazole.png

| PIN = N-(5-Azido-1H-tetrazol-1-yl)carbonimidoyl diazide

| OtherNames = {{ubl|1-Diazidocarbamoyl-5-azidotetrazole|5-Azido-1-diazidocarbamoyltetrazole|N-(5-Azido-1H-tetrazol-1-yl)carbonimidic diazide}}

| Section1 = {{Chembox Identifiers

| CASNo = 1306278-47-6

| CASNo_Ref = {{cite web |title=Azidoazide azide |url=https://www.acs.org/content/acs/en/molecule-of-the-week/archive/a/azidoazide-azide.html |website=American Chemical Society |language=en |date=17 August 2020 |access-date=13 September 2021 |archive-date=28 October 2020 |archive-url=https://web.archive.org/web/20201028181732/https://www.acs.org/content/acs/en/molecule-of-the-week/archive/a/azidoazide-azide.html |url-status=live }}{{Cascite|changed|}}

| PubChem = 101796054

| SMILES = N(=[N+]=[N-])C1=NN=NN1N=C(N=[N+]=[N-])N=[N+]=[N-]

| Abbreviations = AA

| ChemSpiderID = 30649737

| StdInChI = 1S/C2N14/c3-11-6-1(7-12-4)10-16-2(8-13-5)9-14-15-16

| StdInChIKey = ROKXTJDNIZBVDB-UHFFFAOYSA-N

}}

| Section2 = {{Chembox Properties

| C=2 | N=14

| Density = 1.723 g·cm−3{{cite web|last1=Martin|first1=Franz Albert|title=Novel Energetic Materials based on 1,5-Diaminotetrazole and 3,5-Diamino-1H-1,2,4-triazole|url=https://edoc.ub.uni-muenchen.de/14061/1/Martin_Franz_Albert.pdf|access-date=24 February 2018|pages=80–87|archive-date=16 April 2021|archive-url=https://web.archive.org/web/20210416094502/https://edoc.ub.uni-muenchen.de/14061/1/Martin_Franz_Albert.pdf|url-status=live}}

| MeltingPtC = 78

| BoilingPt = Violent explosion at 110 °C

| SolubleOther = Soluble in diethyl ether, acetone, hydrocarbons, chlorinated hydrocarbons{{Cite patent|title=Isocyanogen tetraazide and its preparation|pubdate=1961-06-27|country=US|number=2990412|assign=Olin Mathieson Chemical Corp.|inventor1-last=Grundmann|inventor1-first=Christoph J.|inventor2-last=Schnabel|inventor2-first=Wilhelm Joseph}}

}}

| Section3 = {{Chembox Structure

| Structure_ref = {{cite journal |last1=Klapötke |first1=Thomas M. |last2=Martin |first2=Franz A. |last3=Stierstorfer |first3=Jörg |title=C2N14: An Energetic and Highly Sensitive Binary Azidotetrazole |journal=Angewandte Chemie International Edition |date=26 April 2011 |volume=50 |issue=18 |pages=4227–4229 |doi=10.1002/anie.201100300|pmid=21472944 |doi-access=free }}

| CrystalStruct = orthorhombic

| SpaceGroup = Pbcn

| LattConst_a = 18.1289

| LattConst_b = 8.2128

| LattConst_c = 11.4021

| UnitCellVolume = 1697.6

| UnitCellFormulas = 8

}}

| Section4 = {{Chembox Thermochemistry

| DeltaHf = 357 kcal·mol−1{{cite web|last1=Lowe|first1=Derek|title=Things I Won't Work With: Azidoazide Azides, More Or Less|url=https://www.science.org/content/blog-post/things-i-won-t-work-azidoazide-azides-more-or-less|work=Science Magazine|publisher=American Association for the Advancement of Science|access-date=24 February 2018|date=9 January 2013|archive-date=7 May 2021|archive-url=https://web.archive.org/web/20210507110923/https://blogs.sciencemag.org/pipeline/archives/2013/01/09/things_i_wont_work_with_azidoazide_azides_more_or_less|url-status=live}} (1495 kJ·mol−1)

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| Section5 = {{Chembox Explosive

| ShockSens = <0.25 J

| FrictionSens = <1 N

| DetonationV = 8960 m·s−1

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| Section6 =

| Section7 = {{Chembox Hazards

| MainHazards = will unpredictably and violently detonate – part of the nitrogen highly energetic compounds family.

| NFPA-H =

| NFPA-F =

| NFPA-R =

| NFPA-S =

| ExploLimits =

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1-Diazidocarbamoyl-5-azidotetrazole, often jokingly referred to as azidoazide azide, is a heterocyclic inorganic compound with the formula C2N14.{{cite journal|last1=Klapötke|first1=Thomas M.|last2=Martin|first2=Franz A.|last3=Stierstorfer|first3=Jörg|title=C2N14: An Energetic and Highly Sensitive Binary Azidotetrazole|journal=Angewandte Chemie International Edition|date=26 April 2011|volume=50|issue=18|pages=4227–4229|doi=10.1002/anie.201100300|pmid=21472944|doi-access=free}} It is a highly reactive and extremely sensitive explosive.

Synthesis

1-Diazidocarbamoyl-5-azidotetrazole was produced by diazotizing triaminoguanidinium chloride with sodium nitrite in ultra-purified water. Another synthesis uses a metathesis reaction between isocyanogen tetrabromide in acetone and aqueous sodium azide. This first forms isocyanogen tetraazide, the "open" isomer of C2N14, which at room temperature quickly undergoes an irreversible cyclization reaction to form a tetrazole ring.{{Cite journal|last1=Banert|first1=Klaus|last2=Richter|first2=Sebastian|last3=Schaarschmidt|first3=Dieter|last4=Lang|first4=Heinrich|date=2013|title=Well Known or New? Synthesis and Structure Assignment of Binary C2N14 Compounds Reinvestigated|journal=Angewandte Chemie International Edition|volume=52|issue=12|pages=3499–3502|doi=10.1002/anie.201209170|pmid=23404921|issn=1521-3773}}

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Properties

The C2N14 molecule is a monocyclic tetrazole with three azide groups. This ring form is in equilibrium with isocyanogen tetraazide, an isomeric acyclic structure that has long been known to cyclize quickly to the tetrazole.

It is one of a family of high energy nitrogen compounds in which the nitrogen atoms do not have strong triple bonds. This instability makes many such compounds liable to explosive decomposition, releasing nitrogen gas.

This tetrazole explosive has a decomposition temperature of 124 °C. It is very sensitive, with an impact sensitivity lower than 0.25 joules. It is, however, less sensitive than nitrogen triiodide. Decomposition can be initiated by only using contact or using a laser beam.{{Cite journal|last1=Klapötke|first1=Thomas M.|last2=Krumm|first2=Burkhard|last3=Martin|first3=Franz A.|last4=Stierstorfer|first4=Jörg|date=2011-11-09|title=New Azidotetrazoles: Structurally Interesting and Extremely Sensitive|journal=Chemistry: An Asian Journal|volume=7|issue=1|pages=214–224|doi=10.1002/asia.201100632|issn=1861-4728|pmid=22069147|s2cid=27239569 }} For these reasons, it is often erroneously claimed to be the world's most sensitive compound.{{Cite web |title=Beware Of Azidoazide Azide, The World's Most Explosive Chemical |url=https://www.discovery.com/science/Azidoazide-Azide-Most-Explosive-Chemical |access-date=2022-04-05 |website=Discovery |language=en}}

See also

  • {{wiktionary-inline|azidoazide azide}}

References

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