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3D model (JSmol)
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CompTox Dashboard (EPA)
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| Properties | |
| Fe(N3)3 | |
| Molar mass | 181.9053 g/mol |
| Appearance | Dark brown solid[1] |
| Melting point | Explodes |
| Solubility | Soluble in methanol |
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Other cations
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Cobalt(II) azide Nickel(II) azide Copper(II) azide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Iron(III) azide, also called ferric azide, is a chemical compound with the formula Fe(N3)3. It is an extremely explosive, impact-sensitive, hygroscopic dark brown solid. This compound is used to prepare various azidoalkanes, such as n-butyl azide, from alkenes via formation of alkylboranes and subsequent anti-Markovnikov addition of azide group.[2]
Preparation[edit]
This compound is prepared by the reaction of sodium azide and iron(III) sulfate in methanol:[2]
- 6 NaN3 + Fe2(SO4)3 → 2 Fe(N3)3 + 3 Na2SO4
Iron(III) azide can also be formed by pulse gamma-irradiation of a mixture of iron(II) perchlorate, sodium azide, and hydrogen peroxide.[3] Under these conditions, a neutral N3 radical is formed, which oxidizes the iron(II) to iron(III); the iron(III) then promptly combines with azide ions.
References[edit]
- ^ "10". Chemical Abstracts: Volume 11. the University of Michigan: American Chemical Society. 1917. p. 2901.
- ^ a b Andrew D. White (2001). "Iron(III) Azide". Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons, Ltd. doi:10.1002/047084289X.ri053. ISBN 0471936235.
- ^ George V. Buxton; Igor Janovský (1976). "Mechanism of the oxidation of iron(II) by the azide radical". Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases. 72: 1884–1886. doi:10.1039/F19767201884.
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