organometallic chemistry

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organometallic chemistry,

the reactions and use of a class of compounds (R-M) that contain a covalent bond between carbon and metal. They are prepared either by direct reaction of the metal with an organic compound or by replacement of a metal from another organometallic substance. Their use is based on the polar R-M bond, in which the carbon atom carries a partial negative charge, and on the nature of the metal atom. In synthesis they act as nucleophiles that can bond with relatively positive carbon atoms in compounds such as alkyl halides, aldehydes, and ketones. For example, the Grignard reagent, RMgX (where X equals Br, Cl, or I), and organolithium compounds react with ketones to give secondary alcohols. In industry, butyllithium is used for the polymerization of isoprene in the manufacture of synthetic rubber; metalloorganic compounds serve as catalysts. The semimetals, boron, and silicon are important organometallics; organoboranes are used in synthesis, while organosilicones are polymerized to manufacture plastics and elastomers. Many organometallics are toxic primarily because of the toxicity of the metal. For example tetraethyl leadtetraethyl lead
, (C2H5)4Pb, viscous, colorless, poisonous liquid. It is an organometallic compound prepared by reacting ethyl chloride with a sodium-lead alloy.
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 has been banned as gasoline additive and the conversion of mercury to mercury alkyls by fish has had serious consequences in Japan.
References in periodicals archive ?
Casey, an organometallic chemist at the University of Wisconsin-Madison.
Warren Piers is regarded as Canada's most outstanding organometallic chemist in his (mid-career) age group, winning a number of highly prestigious awards including a Steacie Fellowship and being elected as a Fellow of the Royal Society of Canada.
A leading organometallic chemist, Stephan and his research group discovered a new family of compounds that polymerize ethylene under laboratory conditions.
Warren Piers is a synthetic organometallic chemist, whose research interests include the development of new olefin polymerization catalysts and co-catalysts, and the development of new catalytic processes using early transition metal organometallic compounds.
I would enthusiastically recommend the book to any organic, inorganic or organometallic chemist who makes extensive use of NMR spectroscopy in their research.