Iron reaction with sodium azide

I. Reaction with Sodium Azide, Hydrogen Peroxide and Iron(III) Chloride... 

In the presence of iron(III) chloride, the reaction of alkenes with sodium azide, iron(II) sulfate and hydrogen peroxide leads to /J-chloro azides, via the following mechanism8,9. 

Dry, finely ground iron(III) sulfate is suspended in absolute methanol and agitated with dry sodium azide. The solution turns deep red it is decanted and evaporated in vacuo to yield black-brown, leafy crystals of Fe(N3)3 [54]. Reactions in aqueous media, e.g., dissolving iron metal in hydrazoic add [153] or treating iron(III) salts with sodium azide [135], lead upon concentration to poorly defined basic products. 

Iron(n) salts mediated the coupling of trialkylboranes with KSGN to give RSCN via a radical process.553,554 Stereochemically pure ( )-l-thiocyanato-alkenes or ( )-l-azide-alkenes were obtained from alkynes when hydro-boration with disiamylborane was followed by reaction with potassium thiocyanate or sodium azide in the presence of copper(n) nitrate, copper(n) acetate, and small amount of water in polar aprotic solvent (Equation (116)).555... 

Earlier, Turrentine (Ref 4) obtained ferric azide in soln by electrolysis of a dil sodium azide soln using iron electrodes and later by Browne et al (Ref 6) on using iron electrodes in liq amm solns of ammonium azide, but the product was ammonolyzed to an Ammono-Basic Ferric Azide. Curtius et al (Refs 1 2), with ferric alum and NaN, obtained ferric azide in soln and they also repotted that iron dissolved in dil aq hydrazoic acid to form the azide, but the soln decompd on evapn giving either the basic azide or hydroxide. In 1934 Franklin (Ref 9) noted that aq hydrazoic acid reacts on iron to form ferric azide, nitrogen and ammonia together with a small amt of hydrazine. According to Franklin Ferrous Azide, Fe(Nj), is formed first and oxidizes to ferric azide when the soln is warmed with excess hydrazoic acid present. Ricca (Ref 11) studied the reactions of the ferric ion with hydrazoic acid on electrolysis of their solns and obtained results which would indicate that ferric azide has the structure [Fe(Nj)](Nj)2... 

LEAD CHROMATE or LEAD(II) CHROMATE (7758-97-6) PbCr04 Noncombustible solid. Violent reaction with sulfur, iron(III) ferrocyanide, azo-dyes. Forms unstable, impact-sensitive and/or pyrophoric mixtures with hydrozoic acid, sodium azide, sulfur, tantalum, trinitrobenzoic acid. Incompatible with azo dyes, ammonia, hydrazine, methyl isocyanoacetate, sodium peroxyborate, urea nitrate. A known human carcinogen. 

MERCURIO (Italian, Spanish) (7439-97-6) Violent reaction with alkali metals, aluminum, acetylenic compounds, azides, boron phosphodiiodide (vapor explodes), bromine, 3-bromopropyne, chlorine, chlorine dioxide, ethylene oxide, lithium, metals, methyl silane (when shaken in air), nitromethane, peroxyformic acid, potassium, propargyl bromide, rubidium, sodium, sodium carbide. Forms sensitive explosive products with acetylene, ammonia (anhydrous), chlorine, picric acid. Increases the explosive sensitivity of methyl azide. Mixtures with hot sulfuric acid can be explosive. Incompatible with calcium, sodium acetylide, nitric acid. Reacts with copper, silver, and many other metals (except iron), forming amalgams. 

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