Ferric cyanide

Feiri-. ferric, ferri-, iron(III). -acetat, n. ferric acetate, iron(IIl) acetate, -ammonsulfat, n. ammonium ferric sulfate, -bromid, n. ferric bromide, iron(III) bromide, -chlorid, n. ferric chloride, iron(lll) chloride, -chlor-wasserstoff, -chlorwasserstoffsMure, /. fer-richloric acid. -cyan, n. ferricyanogen. -cyaneisen, n. ferrous ferricyanide (Turn-bull s blue), -cyanid, n. ferric cyanide, iron(III) cyanide ferricyanide. 

O.NiCgH2(CH3)2 N.6 ( ) mp 250° diffc sol prepd by heating a soln of 1,4-dlmethyl-benzoquinone-dioxime in NaOH with K ferric cyanide soln (Ref 1, p659 Ref 2)... 

Turnbull s blue 2KFe"Fe "(CN)6.Aq + Fe"S04.Aq = Fe"3Fe" 2(CN),2 and with excess of a ferric salt, Prussian blue is formed 3lvFe"Fe" (CN)fi.Aq + Fe" Cl3. Aq = Fe 3Fe" 4(CN) 1S + 3 KC1. Aq. Potassium ferricyanide, with ferric iron, gives a brown solution, which may contain ferric cyanide. These colours are used as tests for ferric or ferrous iron. 

On the basis of the foregoing generalization, it is reasonable to postulate that the simple transition metal cyanides with six or less d electrons will adopt the Prussian blue structure. However, metal cyanides with seven or more d electrons will crystallize in less symmetric structures. At the present there are insufficient data to thoroughly check this proposal, but the few known structures lend support to the idea. For example, ferrous cyanide (ferrous ferrocyanide) and ferric cyanide (ferric ferri-cyanide) crystallize with the Prussian blue structure while nickel and zinc cyanides do not. 

Bulk TLC Dissolve in H20, apply, spray with Na bicarbonate solution followed by acetic anhydride, heat Silica HCOOH-acetone-CH2Cl2 (0.5 50 50) Ethylenediamine/ ferric cyanide EP, pt. 11-7, pp. 254-3, noradrenaline also assayed, HPLC, resolved from lidocaine/ bupivacaine [130] [6]... 

Ferric cyanide is not known, but large numbers of complex derivatives of both ferrous and ferric cyanides have been prepared in which the iron enters into the negative radicle. These are known as ferro-and ferri-cyanides respectively. 

In oxidation reactions, however, osmium is significantly more selective than catalysts derived from other transition metals. Osmium-based catalysts for the hydroxylation and amination of aUcenes are very widely used in organic synthesis. With alkaloid-derived ligands, the hydroxylation and amination reactions are highly enantioselective (see Enantioselectivity). The use of bleach, hydrogen peroxide, ferric cyanide, and oxygen have been reported as secondary oxidants for some of these reactions. 

The heterobimetallic complexes [N(n-Bu)4] [Os(N)R2(/u.-0)2Cr02] catalyze the selective oxidation of alcohols with molecular oxygen. A mechanism in which alcohol coordinates to the osmium center and is oxidized by B-hydrogen elimination (see -Hydride Elimination) is consistent with the data. The hydroxide adduct of OSO4, [0s(0H)204], with ferric cyanide and other co-oxidants catalyzes the oxidative dehydrogenation of primary aromatic and aliphatic amines to nitriles, the oxidation of primary alcohols to carboxylic acids, and of secondary alcohols to ketones. Osmium derivatives such as OsCb catalyze the effective oxidation of saturated hydrocarbons in acetonitrile through a radical mechanism. ... 

Ferrous and Ferric Cyanides.—Iron being both bivalent and triva-lent forms two salts with hydrocyanic acid... 

Chemical oxidation is very effective in destroying free cyanide as well as cadmium, copper, and zinc cyanide complexes. However, nickel cyanide is incompletely destroyed, and iron cyanide complexes are apparently unaffected by chlorine or ozone. The ozone-UV radiation process (i.e., advanced oxidation process) is effective for treatment of complexed cyanide, such an ferric cyanide, copper cyanide, and nickel cyanide. Performance data of oxidation processes from the following industries are presented in the appendixes ... 

Nelson et al. used the oxidation of morphine to pseudomorphine 1n a post-column reactor. For the post-column derivatizing reagent, a solution of 50 mg potassium ferric cyanide in 250 ml of 4 M ammonia was used. Methanol - 0.1 M aqueous potassium bromide (12.5 87.5) was used as mobile phase for the separation of the alkaloids on a octadecyl stationary phase. The fluorescence was measured at 432 nm after excitation at 323 nm. 

Belleli et al. (111) have utilized RSSF to investigate the influence of the distal histidine residue on the dissociation of cyanide from ferrous (Fe2+) myoglobin. Rapid mixing of a ferric-cyanide complex with dithionite results in the rapid formation of a spectroscopically distinguishable ferrous-cyanide complex, which slowly decomposes to yield reduced myoglobin and HCN. In this study, the RSSF spectral changes and kinetic time courses of both horse heart and sperm... 

Potassium ferric cyanide Carbolino-quinazoline ring synthesis... 

The differential solvation of the active site in the Asn251 and Ala252 mutants is also observed in resonance Raman spectra of the ferric cyanide adducts. Specifically, while the wild-type enz5ane shows exclusive sensitivity to isotopic exchange in the bent conformer, those of the... 

Salze, and regarded them as double compounds of potassium cyanide and ferrous and ferric cyanides, the yellow prussiate being zKCy -fFeCy (K = 2 X 39) and the red prussiate 3KCy -f Fe Cy . This fails to explain the very peculiar properties of the compounds. 

Cytochrome c can easily be oxidized to ferric cytochrome c by ferric cyanide or other oxidizing agents. The reduced form can be regenerated by the addition of reducing agents, such as cysteine, ascorbic acid, or hydrosulfide. 

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