Schrock carbene
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Schrock carbenes are a class of organometallic compounds featuring a metal-carbon double bond, developed by chemist Richard R. Schrock. These compounds are crucial catalysts in metathesis reactions, a process that rearranges carbon-carbon double bonds to form new molecules. Schrock's work, for which he shared the Nobel Prize in Chemistry in 2005, involved systematically testing metal catalysts, leading to the development of efficient molybdenum-based catalysts in 1990. These catalysts, while sensitive to air and water, were based on the Schrock carbenes he had been developing since the 1970s. Schrock carbenes are characterized by a specific polarity where the carbon atom bonded to the metal is electron-rich.123
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organometallic compoundAlkylidene ligandsThe complexes are known as Schrock carbenes for their discoverer, American chemist Richard Schrock. The chemistry and spectroscopy of the Schrock carbenes indicate that these compounds have the opposite polarity of the Fischer carbenes. The carbon behaves as if it were electron-rich, because the MĪ“+=CĪ“ā bond is polarized so asā¦
Read MoreThe complexes are known as Schrock carbenes for their discoverer, American chemist Richard Schrock. The chemistry and spectroscopy of the Schrock carbenes indicate that these compounds have the opposite polarity of the Fischer carbenes. The carbon behaves as if it were electron-rich, because the MĪ“+=CĪ“ā bond is polarized so asā¦
Read More- organometallic compoundCyclic polyene ligands
The Schrock carbene Ta(Ī·5-C5H5)2(CH3)(CH2), shown above, is one such example. Bent sandwich compounds are important in the organometallic chemistry of the f-block elements, but to achieve stability the pentamethylcyclopentadienyl ligand, C5(CH3)5, is generally employed with these elements, as, for example, in the following uranium
Read MoreThe Schrock carbene Ta(Ī·5-C5H5)2(CH3)(CH2), shown above, is one such example. Bent sandwich compounds are important in the organometallic chemistry of the f-block elements, but to achieve stability the pentamethylcyclopentadienyl ligand, C5(CH3)5, is generally employed with these elements, as, for example, in the following uranium
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