carbene

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carbene

(ˈkɑːbiːn)
n
(Chemistry) chem a neutral divalent free radical, such as methylene: CH2
References in periodicals archive ?
Chemists describe the current knowledge about N-heterocyclic carbenes and their applications.
The study, which was published in Nature Chemistry, defines a new oxidative activation pathway and promises systematic control over the extent of the bond activation processes leading to the formation of transition metal complexes, for example featuring carbenes.
The police recovered two rifle, six revolvers, 37 pistols, 11 guns, two carbenes and rounds from them, he added.
We weren't the first people who looked at heterocyclic carbenes as ligands," he says, "but we and a number of other people started to look at them at a very fundamental level.
Voltaglue is developed using hydrogels consisting of carbon molecules called carbenes grafted on to plastic molecules known as dendrimers.
They made a series of seven new compounds, called caffeine-based gold (I) N-heterocyclic carbenes, in the laboratory and studied them.
The latter chapters cover lithium, rhodium, ruthenium, chromium, cobalt, and gold in interaction with carbenes.
Diazo-compounds are known to yield carbenes by heating, catalytic decomposition or ultraviolet (UV) irradiation (23), (24).
1996) Main group element analogues of carbenes, olefins, and small rings.
FLUORESCENT RHODIUM AND IRIDIUM COMPLEXES DERIVED FROM N-HETEROCYCLIC CARBENES, C.
It consists of six chapters covering heavy analogs of: carbenium, free radicals, carboanions, carbenes, unsaturated hydrocarbons, and aromatic compounds.
The imidazolium cation has been the focus of much attention in recent years, most notably as a source of N-heterocyclic carbenes, which can be used either as ligands for transition metal catalysts or as catalysts themselves, and as the cationic component of the most popular family of room temperature ionic liquids.