carbocation

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carbocation

[¦kär·bō′kat‚ī·ən]
(organic chemistry)
A positively charged ion whose charge resides, at least in part, on a carbon atom or group of carbon atoms.
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It is well known that induction of DMN-dI activity could lead to the production of more reactive carbonium ions that alkylate DNA and other macromolecules [23, 24].
Erectile Dysfunction Drugs Changed the Protein Expressions and Activities of Drug-Metabolising Enzymes in the Liver of Male Rats
Increasing temperature could improve both of the diffusion velocity of carbonium ions (+C[H.sub.2]OH) into initial fibers and the reaction rate of carbonium ions (+C[H.sub.2]OH)/ surface fibers crosslinking reaction.
Optimization of curing process for carbon fiberpreparation from woodphenol liquefaction product
Low energy pathways for carbonium ion formation and novel methods for generating alkali ion complexes with .pi.- and n-donor bases.
Comparative calculations of alkali metal cation basicities of some Lewis bases/Lewisi aluste leelismetallikatiooni aluselisused: monede arvutuskeemia meetodite vordlus
The resulting sulfo conjugate is supposed to be very unstable and can decompose to a reactive DNA-binding carbonium ion.
Genotoxic potential of fluoxymesterone in cultured human lymphocytes
The rodent bioassay data indicate that methyl eugenol, along with some structural analogs and when administered at high-bolus doses, may cause a shift in metabolism, resulting in the formation of a reactive carbonium ion intermediate.
The use of biomonitoring data in exposure and human health risk assessments
At acidic centres on catalyst surface, C4 alkenes are easy to form carbonium ions, through which reactions can take place, and consequently, the conversion is high.
Secondary cracking of C4 hydrocarbons from heavy oil catalytic pyrolysis
(1) Cleavage of organic matrix via free-radical mechanism that favors the evolution of straight-chain aliphatics and [C.sub.2] hydrocarbons, and (2) cracking of hydrocarbon products via a carbonium ion mechanism that favors the formation of isoparaffins, internal olefins, and [C.sub.3] gases [2].
Comparison of hydrocarbons formed at pyrolysis of Turkish Type I Kerogen (Goynuk) and Type II Kerogen (Beypazari)
Butler and Hussain (1981) suggested a mechanism for the generation of this intermediate and its subsequent oxidation to form a coloured carbonium ion [XII], which has since been cited in reviews on the determination of urea (Taylor and Vadgama 1992; Francis et al.
The determination of urea in soil extracts and related samples--a review
David Wulfman is a graduate of the University of Michigan and holds a PhD from Stanford University where he did work on steroid total syntheses and NMR studies of carbonium ion processes.
Resource reclamation, recovery and reuse of military explosives and propellants: a small business-university consortium approach
Schleyer, Carbonium Ions, 2, 837-97, Wiley, New York (1970).
Homogenous and heterogeneous sulfonation of polymers: a review
This rule allows carbonium ions of different structure to be distinguished between those that could create tumors in organisms and those that cannot (ref.
A new safe thiuram, TBzTD
DMC-produced transient intense red colour carbonium ion complex when dissolved in [H.sub.2]S[O.sub.4] (concentrated).
Isolation, characterization, crystal structure elucidation, and anticancer study of dimethyl cardamonin, isolated from Syzygium campanulatum Korth

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