Ferric Azide

Fig. 5.2 Top Photochemical production of Fe(V) from a ferric-azide precursor. Bottom Mossbauer spectra observed for the precursor (green) and the photoproduct (red)...

Figure 5.14 presents experimental, fitted, and purely quantum-chemically calculated NIS spectra of the ferric-azide complex. It is clear that the fitted trace perfectly describes the experimental spectra within the signal-to-noise ratio. Furthermore, the purely theoretical spectrum agrees well with the fitted spectrum. This indicates that the calculations provide highly realistic force field and normal mode composition factors for the molecule under smdy and are invaluable as a guide for least-square fittings. 

Ferric Triazide. Same as Ferric Azide, Vol 1, p A543... 

The preparation of ferric azide failed, however, due to the formation of basic ferric azide. A complex compound was obtained by Martin from chromium hydroxide and hydrazoic acid. It contained no chromium or N ions and has the probable formula of a complex compound [Cr(N3)4]H. 

Ammono-basic Ferric Azide. See under Ferric Azide... 

Aq solns of ferric azide have a deep red coloration similar to that produced by Fe(CNS)s. This characteristic coloration is also produced when ferric salts are added to aq solns of hydrazoic acid, thus serving as a colorimetric test for HN3(Ref 3)... 

Vinyl monomers studied were acrylonitrile, methyl methacrylate and methacrylic acid The toxicity or hazardous nature of ferric azide is not given in Sax nor were there found any other expl props repotted in the literature (Refs 7 8)... 

Ferric potassium sulfate 1 A156—A157 Ferric triazide see Ferric azide 1 AS43 Ferricyanides 6 F15 Ferri-ferrous oxide 6 FI 5 Ferrifracteur 6 Fi5 Ferrite 6 FI 5... 

T. Curtius and J. Rissom showed that the evaporation of a soln. of manganese carbonate in hydrazoic acid gives a pulverulent, non-crystalline manganese hydroxyazide, Mn(OH)(N3)2, which cannot be purified by re-crystallization. The product is sparingly soluble in water it does not explode by percussion, but does so on a hot plate. L. Wohler and F. Martin gave 203° for the explosion temp, of manganese azide. T. Curtius and J. Rissom obtained a colourless soln. of ferrous azide by the action of sodium azide on a soln. of ferrous ammonium sulphate when boiled, the salt decomposes and when shaken in air, a blood-red soln. of ferric azide is formed. The same salt can also be obtained directly from ferric salts. When the soln. of ferric azide is boiled, ferric hydroxide is precipitated and, added T. Curtius and A. Darapsky, if allowed to stand in... 

Ferric Azide A543-L Ferric Azide, Basic A543-R Ferric Triazide. See Iron Azide A543-L Ferrous Acetylide. See Iron Acetylide A76-R... 

Figure 11. MCD spectra at 4 °C of the (A) ferric azide and (B) cyanide adducts of HPII catalase (----) and of methylchlorin-reconstituted myoglobin (----). MCD spectra were obtained using a JASCO J-500A spectro-...

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... 

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