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Hexanitrogen
Hexanitrogen (diazide, hexaaza-1,2,4,5-tetraene) is a nitrogen compound with the formula N6, consisting of two azide units linked to each other. Its stability and structure were theorized in 2016 and its synthesis was reported in 2025. It is stable at cryogenic temperatures. Its synthesis has been regarded as highly significant, as higher allotropes of nitrogen have potential application as propellants, explosives or energy storage. Synthesis It is synthesized by the reaction of silver azide (AgN3) with chlorine or bromine gas under reduced pressure at room temperature via chlorine azide or bromine azide as the intermediate. The product is collected by matrix isolation in solid argon (10 K) or by condensation on a liquid nitrogen cooled surface (77 K). : : Structure All six atoms form a single chain, resembling two azide (N3) units linked together. : Computational analysis predicts that the bond lengths in the molecule vary significantly, indicating a complex elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromine Azide
Bromine azide is an explosive inorganic compound with the formula . It has been described as a crystal or a red liquid at room temperature. It is highly sensitive to small variations in temperature and pressure, with explosions occurring at Δp (pressure change) ≥ 0.05 Torr upon crystallization, thus extreme caution must be observed when working with this chemical. Preparation Bromine azide may be prepared by the reaction of sodium azide with . This reaction forms bromine azide and sodium bromide: : Structure The high sensitivity of bromine azide has led to difficulty in discerning its crystal structure. Despite this, a crystal structure of bromine azide has been obtained using a miniature zone-melting procedure with focused infrared laser radiation. In contrast to , which forms an endless chain-like structure upon crystallization, forms a helical structure. Each molecule adopts a ''trans''-''bent'' structure, which is also found in the gas phase. Reactions Bromium azide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorine Azide
Chlorine azide () is an inorganic compound that was discovered in 1908 by Friedrich Raschig. Concentrated is notoriously unstable and may spontaneously detonate at any temperature. Preparation and reactions Chlorine azide is prepared by passing chlorine gas over silver azide, or by an addition of acetic acid to a solution of sodium hypochlorite and sodium azide. Chlorine azide further reacts with silver azide to produce a very unstable allotrope of nitrogen, hexanitrogen (N6), which decomposes to dinitrogen above . Explosive characteristics Chlorine azide is extremely sensitive. It may explode, sometimes even without apparent provocation; it is thus too sensitive to be used commercially unless first diluted in solution. Chlorine azide reacts explosively with 1,3-butadiene, ethane, ethene, methane, propane, phosphorus, silver azide, and sodium. On contact with acid, chlorine azide decomposes, evolving toxic and corrosive hydrogen chloride gas. Regulatory information Its ship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate (chemistry)
In chemistry, a reaction intermediate, or intermediate, is a molecular entity arising within the sequence of a stepwise chemical reaction. It is formed as the reaction product of an elementary step, from the reactants and/or preceding intermediates, but is consumed in a later step. It does not appear in the chemical equation for the overall reaction. For example, consider this hypothetical reaction: :A + B → C + D If this overall reaction comprises two elementary steps thus: :A + B → X :X → C + D then X is a reaction intermediate. The phrase ''reaction intermediate'' is often abbreviated to the single word ''intermediate'', and this is IUPAC's preferred form of the term. But this shorter form has other uses. It often refers to reactive intermediates. It is also used more widely for chemicals such as cumene which are traded within the chemical industry but are not generally of value outside it. IUPAC definition The IUPAC Gold Book defines an ''intermediate'' as a compound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
