Nickel ferrate

Potassium nickel ferricyanide [potassium nickel hexakis(cyano-ferrate(3-))] KNi[Fe(CN)6] [53295-14-0]... 

To prepare metal hexacyanoferrate films, very frequently the following procedure was followed first a film of the respective metal, for example, cadmium [79], copper [80], silver [81], or nickel [82, 83] was elec-trochemically plated on the surface of a platinum electrode, and that was followed by chemical oxidation of the metal film in a solution of K3[Fe(CN)6], leading to the formation of the metal hexacyanoferrates. The same method has been used to produce films of nickel hexacyanoruthen-ate and hexacyanomanganate using the appropriate anions [83]. It is also possible to perform the oxidation of the deposited metals in solutions containing hexacyano-ferrate(II) by cyclic oxidation/reduction of the latter. In a similar way, films of copper heptacyanonitrosylferrate have been deposited [84]. 

C7H704Rh, Rhodium(I), dicarbonyl(2,4-pentanedionato)-, 34 128 C7HgN4, Bis(l-pyrazolyl)methane, bpm, complex with nickel(ll), 34 139 CgH5FeKN20, Ferrate(ll), carbonyldicyano-(cyclopentadienyl)-, potassium, 34 172 CgH23Ns, Tetraethylenepentamine, tetren, complex with nickel(ll), 34 147, 148 CgH24B2N4, Diborane(4), tetrakis(dimethyl-amino)-, 34 1... 

C54H4gFe2N36Ni3-7H20, Ferrate(III), tris bis(l-pyrazoly l)methane)nickel(II) bis hexacya-no-, heptahydrate, 34 139... 

Ligands are named first, starting with any anionic ones, and the name of the metal is followed without a space by the oxidation state in Roman numerals (or the Arabic 0, for zero-valent metal centers) in parentheses. If the complex as a whole is anionic, the metal name is made to end in -ate, which replaces endings such as -ium or -um (nickelate, chromate, tantalate) and is followed by the oxidation state. Where the chemical symbol is derived from a Latin name, the anion name is usually also Latinized cuprate, argentate, aurate, ferrate, stannate, plumbate—but mercurate is an exception. 

Sr-doped La-manganates, cobaltates, nickelates, and ferrates are typical examples of such mixed conducting oxides. In fact,... 

SYNS NICKEL ZINC FERRATE NICKEL ZINC FERRITE 1000 NN FERRITE... 

Iron, cobalt and nickel are unlike the elements which precede them since they fail to form moderately stable oxo-anions like VOg , CrO/ and Mn04. The unstable ferrate ion, FeO -, is a very strong oxidising agent no oxo-anion of Co or Ni exists. In this, the metals illustrate the greatly reduced tendency of d electrons to function as valency electrons once the d level is more than half filled. However, the small ionic radii of the 2-f- and 3+ cations, together with the presence of unfilled d orbitals, favour complex formation. The complexes of Co anionic, cationic and neutral, are particularly numerous. 

KETONES Lithium diisopropylamide. Nickel carbonyl. Sodium tetracarbonyl-ferrate(-II). Thallium(III) nitrate. 2,4,4,6-Tetramethyl-5,6-dihydro-l,3-(4 I)-oxazine. Triphenylmethyl hexafluorophosphate. y-KETONITRILES Sodium cyanide. (3-LACTONES Silver nitrate. y-LACTONES a-Chloro-N-cyclohexylpro-panaldoxime. 

Fig. 15. Activities of first-row transition-metal oxide perovskites for CO oxidation in a 2 1 mixture of CO and 02 at atmospheric pressure (a) or in a 1 1 mixture of CO and 02 at 227°C at atmospheric pressure (b). The activities of vanadates ( ), chromates ( ), manga-nates (A), ferrates (O), cobaltates ( ), and nickelates ( ) are plotted at the appropriate d-orbital occupation corresponding to the average valence of the transition-metal ion. (Redrawn by permission from Refs. 14 and 176.)...

The incorporation of different components (e.g., catalytically active metals [222, 239,403,626,752,773], enzymes [674], photochemically active componnds [585], silicomolybdate [252,703], Keggin-type heteiopolyanions [412], nickel hexacyano-ferrate [417], CoFe204 [498], nncleotides [666], etc.) also results in composite materials with new and advantageous properties. In many cases the enhanced catalytic activity, higher capacity, etc., are due to the increased surface area, while in other cases the interaction between the conducting polymer and the other constituents results in a novel material that can be used for specific applications. Several other composites which are used in sensors, in supercapacitors, or for electrocatalytic purposes will be mentioned in Chap. 7. 

Cl2H18Cl8Fe3Ng, Hexakis(acetonitrile)iron(lI) bis(tetrachloro-ferrateD 38B, 916, 917 46B, 1066 Cl2H18Cl8Ga2NgNi, Hexakis(methyl cyanide)nickel tetrachlorogallate, 38B, 916... 

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