Iron pentacarbonyl nonacarbonyl

CN > NO2 > NH3 > H2O, F > Cl . Exceptions do occur. Photochemical Ligand dissociation is useful in the synthesis of multinuclear metal complexes such as diiron nonacarbonyl [15321-51 from iron pentacarbonyl [13463-40-6]... 

Aniline has also been obtained (93%) from a homogenous reduction with preformed tetraethylammonium hydridotri-iron undecacarbonyl [10], In this reduction, the yield is comparable, or superior, to that obtained when the more reactive iron pentacarbonyl or di-iron nonacarbonyl complex is used in the absence of a phase-transfer catalyst. 

Iron pentacarbonyl Iron nonacarbonyl Iron dodecacarbonyl Iron hydrocarbonyl... 

Other carbonyls are prepared from iron pentacarbonyl. For example, iron nonacarbonyl is formed by decomposition of the pentacarbonyl when exposed to light. When nonacarbonyl in ether, benzene, or toluene is heated at 60°C, it produces dodecacarbonyl and pentacarbonyl ... 

In acetic acid solution iron pentacarbonyl forms iron nonacarbonyl 2Fe(CO>5 Fe2(CO)9 + CO... 

Various substituted silacyclopentadienes react with iron or cobalt carbonyl compounds to give stable i 4-silacyclopentadiene complexes. Thus, with iron pentacarbonyl, reaction occurs at 150°-200° in an autoclave, with Fe2(CO)9 at 40°-60°, and with Fe3(CO)12 at 80° (20, 21, 49, 132) the same complex can be obtained from a dibromosilacyclopen-tene and diiron nonacarbonyl, under mild conditions (19) ... 

Diiron nonacarbonyl is available from Alpha Inorganics, Inc., or Strem Chemicals, Inc. The submitters made the complex through photolysis of iron pentacarbonyl by the method of King.4 Procedures for preparation are also given by E. H. Braye and W. Hubei, Inorg. Syn., 8, 178 (1966), in which the name diiron enneacarbonyl is used. 

Ferro-nickel nonacarbonyl, FeNi(CO)s, appears to be formed when iron pentacarbonyl is dissolved in nickel tetracarbonyl.3... 

Iron pentacarbonyl when exposed to the action of light decomposes to form carbon monoxide and a solid crystalline substance of a golden-yellow colour and the formula Fe2(CO)9, diferro-nonacarbonyl ... 

Iron enneacarbonyl, see Diiron nonacarbonyl Iron pentacarbonyl, 259,519-520 Iron pentacarbonyl-dimethylacetylene complex, 519-520... 

Cookson and co-workers treated norbornadiene with diiron nonacarbonyl in the dark and isolated five ketones and four dimeric hydrocarbons. The highest-melting dimer, m.p. 163-164°, was isolated easily in 4% yield because it is the first component eluted from a column of silica gel. Lemal and Shim isolated the same dimer from a complex mixture resulting on irradiation of a mixture of norbornadiene and iron pentacarbonyl. Initial characterization excluding alternative structures indicates... 

In a well-ventilated hood a 1-1. three-necked flask is immersed in an oil bath and fitted with a mechanical stirrer and condenser with aT-piece at the top with one lead connected to a nitrogen supply and the other to a gas bubbler. The flask is charged with 60 g. (0.49 mole) of c/i-3,4-dichlorocyclobutene (this volume) in 250 ml. of benzene, and the system is flushed with nitrogen. A first 50-g. batch of diiron nonacarbonyl (2) is added and the mixture is heated at 50-55° with stirring. After about 15 min. the initial rapid evolution of carbon monoxide becomes greatly diminished and a further 25 g. of Fe2(CO)9 is added. Further 25-g. portions are added until no more carbon monoxide is liberated a total of approximately 275 g. of Fe2(CO)9 is required and the total reaction time is about 5 hrs. The mixture is then filtered with suction through Celite and the Buchner funnel is washed thoroughly with pentane until the filtrate is colorless. Fractional distillation at reduced pressure removes benzene, then iron pentacarbonyl (b.p. 20730 mm.) when the Fe(CO)5 has been removed, cyclobutadieneiron tricarbonyl is collected as a pale yellow oil, b.p. 4773 mm. 

Diiron nonacarbonyl LI, 259-260], Supplier Alfa Inorganics. Preparation.1 It is formed by exposing iron pentacarbonyl to sunlight or, better, to artificial light ... 

Organometallic complexes Diiron nonacarbonyl. Iron pentacarbonyl. Silver nitrate (olefin complexes). 

This complex is prepared from benzyUdeneacetone and diiron nonacarbonyl (45% yield) or iron pentacarbonyl hv). 

An example of sonochemical switching was found with the sonolysis of iron pentacarbonyl (Fig. 23).Pyrolysis and photolysis form pyrophoric iron and diiron nonacarbonyl respectively, in contrast to sonolysis, which gives triiron dodecacarbonyl, a compound not easily accessible by other methods. A pyrolytic... 

Synthetic applications of these sonolytic reactions were described but, for the sake of convenience and safety, diiron nonacarbonyl is preferred to the dangerous iron pentacarbonyl (p. 164). ... 

Organoiron compounds were obtained easily from iron pentacarbonyl or, for a better ease of manipulation and safety reasons, from diiron nonacarbonyl. The reaction is based on Suslick s sequential metal-ligand bond cleavage. 

To obtain the nonacarbonyl in a pure condition, the penta derivative is dissolved in dry ether or light petroleum, and exposed to sunlight. The resulting crystals are dried over sulphuric acid and solid paraffin. The nonacarbonyl is practically insoluble in ether, benzene, or light petroleum slightly more soluble in ethyl alcohol or acetone and more so in pyridine. Its density at 18° C. is 2 085. On warming, it decomposes at about 100° C., yielding the pentacarbonyl, free iron, and carbon monoxide. Thus —... 

Pentacarbonyl iron is fairly inert to substitution reactions, and attempts to prepare Fe(CO)5- (CNR) (n = 1-5) by the direct reaction of Fe(CO)5 with isocyanides in Carius tubes has produced only the complexes Fe(CO)s (CNR) (n = 1 and 2). The products were obtained as mixtures that required separation. Other syntheses, including photochemical and trimethylamine N-oxide-promoted displacement of carbonyl groups, or other means, give the same products in variable yield. Procedures based on diiron nonacarbonyl and triiron dodecacarbonyl have produced similar results. The only zero-valent iron complex Fe(CO)5 (CNR) where n > 2 is the complex Fe(CNR)5 prepared either by metal vapor synthesis techniques or by sodium amalgam reduction of iron(II) bromide in the presence of isocyanide. ... 

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