Mercury iron carbonyl

Pyridazines form complexes with iodine, iodine monochloride, bromine, nickel(II) ethyl xanthate, iron carbonyls, iron carbonyl and triphenylphosphine, boron trihalides, silver salts, mercury(I) salts, iridium and ruthenium salts, chromium carbonyl and transition metals, and pentammine complexes of osmium(II) and osmium(III) (79ACS(A)125). Pyridazine N- oxide and its methyl and phenyl substituted derivatives form copper complexes (78TL1979). 

The mercury compounds HgFe(CO)4 and Fe(CO)4(HgX)2 (X = C1, Br, I), which were the first representatives of non-ionic metal derivatives of iron carbonyl hydrides, were discovered by Hock and Stuhlmann (V, 36). During investigations into the preparation of cobalt carbonyls from cobalt halides under CO pressure, in the presence of another metal as a halogen acceptor, we discovered the mixed metal carbonyls M[Co(CO)4]2 (M = Zn, Cd, Hg, Sn) and M[Co(CO)4]3 (M = In, Tl) (44), e.g.,... 

Photolysis is a convenient route - to iron carbonyl derivatives using FefCO), and this route may be better than oxidative addition to Fej(CO),2. One illustration is the 1 1 reaction of FefCO), with (Me2GeH)20 under mercury lamp irradiation for 1 h. in pentane to produce ... 

Pyridazine forms a stable adduct with iodine, with semiconductor properties. " Similar complexes were prepared from iodine mono-ehloride, bromine, and nickel(II) ethyl xanthate. Complexes of pyrida-zines with iron carbonyls and with iron carbonyls and triphenylphosphine have been prepared and investigated. " Complexes of pyridazines with boron trihalides, silver salts, mercury(I) salts, iridium salts, " ruthenium salts, and chromium carbonyls are re-... 

Semicarbazide Hydrochloride, Hydrazinecarbox-emide monohydrochloride aminourea hydrochloride carba-myjhydrazitie hydrochloride. CHjCINjO mol wt 111.54. C 10.77%, H 5.42%, Cl 31.78%, N 37.68%, O 14-34%. NHj-NHCONHj.HCl. Prepd by electrolytic reduction of nitro-iirea with cathodes of copper, nickel, lead, and mercury in hydrochloric acid solution [ngersol] et al, Org. Sytt. 5, 93 (1925). Commercial prepn from hydrazine hydrate, iron carbonyl, and carbon monoxide Sampson, U,S. pat. 2,589, 289 (1952 to du Pont). 

A number of other materials were reported to act as promoters, such as zinc [110, 337], magnesium [111], aluminum [111], bismuth [112], lead [112], gold [112], mercury salts [112], palladium zeolite [113], activated carbon [45] and iron carbonyl [171,979]. Some of these materials were reported to accelerate the hydroformylation but suppress the hydrogenation of the aldehydes formed. 

Hock and Stuhlmann were the first to explore the reaction between iron carbonyl and mercury salts and already at the end of the 1920s obtained compounds containing iron and mercury (Scheme 12.30)... 

Later, Hieber and Pack also prepared some iron carbonyl compounds containing zinc, cadmium, or mercury [75]. 

Heated mercury, copper, iron and silver remove sulphur from carbonyl sulphide cuprous chloride reacts according to the equation ... 

Vanhoye and coworkers [402] synthesized aldehydes by using the electrogenerated radical anion of iron pentacarbonyl to reduce iodoethane and benzyl bromide in the presence of carbon monoxide. Esters can be prepared catalytically from alkyl halides and alcohols in the presence of iron pentacarbonyl [403]. Yoshida and coworkers reduced mixtures of organic halides and iron pentacarbonyl and then introduced an electrophile to obtain carbonyl compounds [404] and converted alkyl halides into aldehydes by using iron pentacarbonyl as a catalyst [405,406]. Finally, a review by Torii [407] provides references to additional papers that deal with catalytic processes involving complexes of nickel, cobalt, iron, palladium, rhodium, platinum, chromium, molybdenum, tungsten, manganese, rhenium, tin, lead, zinc, mercury, and titanium. 

The low lying ji -orbitals of conjugated dienes explain the stability of many diene metal carbonyl complexes e.g. butadiene iron tricarbonyl 382>. Photochemical preparation of the latter 286> is superior to the thermal procedure 272>. Mercury can be used as a sensitizer in the photoreaction of metal carbonyls with dienes I09.i7o,i76,24i)... 

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