Ferrate -, disodium

Iron(II) ediylenediaminetetraacetic acid [15651 -72-6] Fe(EDTA) or A/,Ar-l,2-ethaiiediylbis[A[-(carboxymethyl)glyciQato]ferrate(2—), is a colorless, air-sensitive anion. It is a good reducing agent, having E° = —0.1171, and has been used as a probe of outer sphere electron-transfer mechanisms. It can be prepared by addition of an equivalent amount of the disodium salt, Na2H2EDTA, to a solution of iron(II) in hydrochloric acid. Diammonium [56174-59-5] and disodium [14729-89-6] salts of Fe(EDTA) 2— are known. 

Disodium tetracarbonylferrate sesquidioxanate Ferrate(2-), tetra-carbonyl (1,4-dioxane-O )-, disodium (9) (57398-59-1)... 

Attempts to synthesize the chromium compounds in the absence of coordinating solvents were unsuccessful, and attempts to remove the base led to decomposition. Similar reactions with disodium tetracarbonyl ferrate gave the base-stabilized iron tetracarbonyl compounds shown in Eq. (52). Removal of the coordinated base gave the bridging structure shown (102). 

FeN4Na20aCioHi2 2H2O, Ferrate(ll), (dini-trogen)[[(l,2-ethanediyIdinitriIo)-tetraacetato](4-)]-, disodium, dihydrate, 24 208... 

Na2FejOiiCii, Ferrate(2-), undecacarbo-nyltri-, disodium, 24 157 Na2 4Al2.6N3.80207SijooC43Hio(, Sodium tetra-propylammonium aluminum sUicate, 22 67... 

ALDEHYDES Bis(3-methyF2-butyl)-borane. Dichlorodicyanobenzoqui-none. I -Diphenylphosphonio-1 -meth-oxyincthyllithium. Disodium tetra-carhonyl ferrate. Grignard reagents. Lithium his(cthylcncdinxyhoryl)mcth-idc. Lithium mellioxyttriinethylsilyl)-... 

One might expect that diazotization of aliphatic amines under alkaline conditions or in the presence of strong proton acceptors used for general base catalysis might also yield diazoalkanes. This alternative route, however, has not been successful so far, as shown by the experiments of Maltz et al. (1971), who nitrosated amines with disodium pentacyanonitrosyl ferrate (Fe[CN]5NO Na2 ) at pH up to 12.7 (see Sect. 2.3). 

Maltz et al. (1971) introduced disodium pentacyano(nitrosyl)ferrate (sodium nitro-prusside, 7.7) as nitrosating reagent. This compound has the advantage that it is effective for nitrosations and diazotizations at pH 9-11. This allows the synthesis of alkyldiazenolates (7.9) without deamination by-products, as well as dediazoniations in neutral or weakly alkaline solutions. 

FeN,C45H45, Iron(O), pentakis(2-isocyano-1,3-dimethylbenzene)-, 26 57,28 184 FeNa204C4, Ferrate(2—), tetracarbonyl-, disodium, 28 203... 

FeC 3H (, Iron(O), tricarbonyl(4-phenyl-3-butene-2-one)-, 28 52 04FeNC,3H, Iron(O), tetracarbonyl(2-iso-cyano-l,3-dimethylbenzene)-, 28 180 04FeNP2C4( H3, Ferrate(l-), hydridotetra-carbonyl-, j-nitrido-bis(triphenyl-phosphorusXl+), 26 336 04FeNa2C4, Ferrate(2-), tetracarbonyl-, disodium, 28 203... 

B. DISODIUM (DINITROGEN)[[(l,2-ETHANEDIYLDINITRILO)-TETRAACETATOK4—)]FERRATE(11) DIHYDRATE... 

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