Iron carbonyl anion

Literature examples on the reaction of cobalt carbonyl(49), cobalt carbonyl anion( ), and iron carbonyl anion( ) with propylene oxide have been reported. However either the reaction conditions required are severe, the yields are low, or the reaction is not catalytic. 

The addition of Mo(CO)3 fragments to iron carbonyl anions has also been used to synthesize iron-molybdenum-sulfur compounds. Thus, the reaction between... 

The most extensive series of compounds that fall within this section are the anionic iron carbonyl-thallium clusters recently described by Whitmire (30-30h). These are generally made by reactions between iron carbonylate anions and either T1(I) or Tl(III) salts. Thus treatment of K[HFe(CO)4] with a variety of thallium salts followed by addition of [Et4N]Cl or Br affords the hexanuclear complex [Et4N]2[ Fe(CO)4 2 //-TlFe(CO)4 2], 17... 

Other examples concern the interaction between iron carbonyles and potassium alkylthiolates that is accompanied by disproportionation. The anion radicals Fe2(CO)g, Fe3(CO)fi, Fe4(CO)i3, and Fe(CO)2 are formed (Belousov et al. 1987). The interaction of iron carbonyls Fe(CO)5, Fe2(CO)9, and Fe3(CO)i2 with (CH3)3NO occurs according to a one-electron redox-disproportionation scheme, giving rise to iron carbonyl anion radicals Fe2(CO)s Fe3(CO)n, l e3(CO)i2, and Fe4(CO)ii (Belousov Belousova 1999). 

The. [Fe3(CO)u ]2 anion is a very useful starting material and its reaction with methylating agents has been described.4 Upon reaction with hydroxide, it disproportionates to give other iron carbonyl anions.5 6 Acidification of [Fe3(CO)n]2 - at low temperatures yields H2Fe3(CO)u.7 Interconversion of [Fe3(CO)n]2 into other iron carbonyl anions is possible and under certain conditions the conversion is quantitative.2... 

The hydride iron carbonyl anion, [HFe(CO)4] , has a structure that is best described as a distorted tbp with the hydride ligand occupying an axial site. The anion is fluxional both in solution and in the solid state.113 The main use is found in organic synthesis and catalysis.114 A typical reaction is the reduction of olefins... 

Ring enlargement to // -oxocyclobutenyl complexes, by carbonyl insertion into the three-membered ring, is generally observed in reactions of group 9 cobalt carbonyl anions with cyclopropenylium cations (equation 197) Formation of // -oxocyclobutenyl complexes also occurs with nitroso iron carbonyl anions . These reactions are usually... 

The iron carbonyl anion clusters Fe3(CO)fi and Fe4(CO)f3 react with CO only under pressure at temperatures of 100°-200°C giving derivatives of the anion Fe(CO) (170). 

A. Iron Carbonyl Anions without Other Ligands.218... 

Reaction of various iron carbonyls with Lewis bases yields a rather bewildering variety of iron carbonyl anions depending on the base, the iron carbonyl derivative, and the reaction conditions. A comprehensive... 

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