Structure of the formyl complex CpRe(PPh3)(NO)CHO. Selected distances: dHC-O = 122.1, dHC-Re = 205.5, dON-Re = 177.7 pm.[1]
In organometallic chemistry, a transition metal formyl complex is a metal complex containing one (usually) or more formyl (CHO) ligand. A subset of transition metal acyl complexes, formyl complexes can be viewed as metalla-aldehydes. A representative example is (CO)5ReCHO. The formyl is viewed as an X (pseudohalide) ligand. Metal formyls are proposed as intermediates in the hydrogenation of carbon monoxide, as occurs in the Fischer-Tropsch process.[2]
^Wong, Wai-Kwok; Tam, Wilson; Strouse, C. E.; Gladysz, J. A. (1979). "X-Ray crystal structure and chemical transformations of the neutral metal formyl [(η-C5H5)Re(PPh3)(NO)(CHO)]". J. Chem. Soc., Chem. Commun. (12): 530–532. doi:10.1039/C39790000530.
^Gladysz, J.A. (1982). Transition Metal Formyl Complexes. Advances in Organometallic Chemistry. Vol. 20. pp. 1–38. doi:10.1016/S0065-3055(08)60519-5. ISBN 9780120311200.
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Metal carbonyls are coordination complexes of transitionmetals with carbon monoxide ligands. Metal carbonyls are useful in organic synthesis and as catalysts...
chain) can be referred to as an aldehyde but can also be classified as a formyl group. Aldehydes are a common motif in many chemicals important in technology...
necessary, without the inevitable oxidation (breaking down) of everything. Transitionmetal ions, due to their multiple oxidation states, were the only elements...
low-valent metal centers to give transitionmetal acyl complexes. Illustrative is the oxidative addition of acetyl chloride to Vaska's complex, converting...
reaction in which an electron-rich unsaturated hydrocarbon inserts into a formyl C-H bond. With alkenes, the product is a ketone: RCHO + CH2=CHR' → RC(O)CH2CH2R'...
often necessary. The transitionmetal co-catalyst may server as a "carrier" by first forming reacting with CO to form a carbonyl complex, which is then transformed...
to any chemical processes in which a compound is functionalized with a formyl group (-CH=O). In organic chemistry, the term is most commonly used with...
aldehyde is activated by complexation with the chiral catalyst (R)-BINOL-TiX2 by the formyl lone electron pair syn to the formyl hydrogen to form a pentacoordinate...
amines to give diimines that are widely studied as binucleating ligands. Formyl groups (aldehydes) are fairly strong deactivating groups for electrophilic...
the oxygen-metal bond of the alkoxide complex. The resulting formylcomplex can converted into the formic acid esters and the starting complex by oxidative...
the formula H2Fe(CO)4. This compound was the first transitionmetal hydride discovered. The complex is stable at low temperatures but decomposes rapidly...
Carbene complex with element known No carbene complex with element known Carbenes can be stabilised as organometallic species. These transitionmetal carbene...
temperature, but it will nevertheless react with lithium metal and some transitionmetalcomplexes. This is due to its bonding, which is unique among the...
are metal-propylene complexes, which are intermediates in these processes. Propylene is prochiral, meaning that binding of a reagent (such as a metal electrophile)...
Longuet-Higgins and Orgel predicted the existence of transition-metal cyclobutadiene complexes, in which the degenerate eg orbital of cyclobutadiene...
formula Mn2(CO)10, is a binary bimetallic carbonyl complex centered around the first row transitionmetal manganese. The first reported synthesis of Mn2(CO)10...
forming metal-thionitrosyl complexes. Transition-metal thionitrosyl complexes have been prepared by the following procedures: Sulfur transfer to metal nitrido...
N-methoxydiazeniumdiolate. Nitric oxide reacts with transitionmetals to give complexes called metal nitrosyls. The most common bonding mode of nitric oxide...
carried by adenosine triphosphate the acetyl group, carried by coenzyme A formyl, methenyl or methyl groups, carried by folic acid and the methyl group,...
the hydroxides of most transitionmetals are insoluble, and therefore sodium hydroxide can be used to precipitate transitionmetal hydroxides. The following...
fundamental ligand in transitionmetal alkene complexes. One of the first organometallic compounds, Zeise's salt is a complex of ethylene. Useful reagents...
1200 °C into hydrogen and sulfur. Hydrogen sulfide reacts with metal ions to form metal sulfides, which are insoluble, often dark colored solids. Lead(II)...
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