azide

/az"uyd, -id, ay"zuyd, ay"zid/, n. Chem.
any compound containing the azido group, as sodium azide, NaN3.
[AZ- + -IDE]

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      any of a class of chemical compounds containing three nitrogen atoms as a group, represented as (-N3). Azides are considered as derived from hydrazoic acid (HN3), an inorganic salt such as sodium azide (NaN3), or an organic derivative in which the hydrogen atom of hydrazoic acid is replaced by a hydrocarbon group as in alkyl or aryl azide (RN3), or by an acyl (carboxylic acid) group as in acyl azide.

      Most azides are unstable substances that are highly sensitive to shock. Some inorganic azides and alkyl azides are used as initiating explosives in detonators and percussion caps. Chemically, the azides behave like halogen compounds; they react rapidly with other substances by displacement of the azide group and can give rise to many types of compounds.

      Acyl azides are prepared by reaction of nitrous acid and acid hydrazides or by reaction of an acyl chloride with sodium azide. They are generally more stable than the inorganic and alkyl azides. When heated they undergo molecular rearrangement (Curtius rearrangement), forming isocyanates. In the presence of water the isocyanate is converted to an amine containing one fewer carbon atom than the acyl azide.

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Universalium. 2010.

Look at other dictionaries:

  • azide — az ide n. (Chem.) any chemical compound containing the azido group { N3}, such as {sodium azide} (ionic and inorganic) or {ethyl azide} (organic and nonionic). [PJC] …   The Collaborative International Dictionary of English

  • azide — n. 1. a compound containing the azido group combined with an element or radical. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • azide — ● azide nom masculin Composé organique de formule R―N3, dérivé de l acide azothydrique en remplaçant l atome d hydrogène par un radical alkyle, aryle ou acyle …   Encyclopédie Universelle

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  • azide — noun a) the univalent N radical or functional group or any ester containing this group b) the N anion or any salt containing this anion See Also: hydrogen azide, lead azide, sodium azide …   Wiktionary

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  • azide — A compound that contains the monovalent N3 group. * * * azide ā .zīd, az .īd n a compound containing the group N3 combined with an element or radical * * * az·ide (azґīd) a compound that contains the group N3 …   Medical dictionary

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