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nucleophile
(redirected from Nucleophilic attack)

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nucleophile

Atom or molecule that contains an electron pair available for bonding and in chemical reactions therefore seeks a positive centre, such as the nucleus of an atom or the positive end of a polar molecule (see covalent bond; electric dipole). In the Lewis electron theory (see acid-base theory), advanced by the U.S. chemist Gilbert Lewis (1875–1946) in 1923, nucleophiles are by definition Lewis bases. Examples include the hydroxide ion (OH−), the ions of the halogens chlorine, bromine, and iodine (Cl−, Br−, and I−, respectively), ammonia (NH3), and water (H2O). See also base; electrophile.

nucleophile [′nü·klē·ə‚fīl]
(physical chemistry)
A species possessing one or more electron-rich sites, such as an unshared pair of electrons, the negative end of a polar bond, or pi electrons. Also known as electron donor.
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1 of Asp 170 in an in-line nucleophilic attack that forms the phosphoaspartate intermediate.
The Molecular Architecture of the Mammalian DNA Repair Enzyme, ... by Feridoun Karimi-Busheri / Biological sciences community
The chemoselectivity of the esterification reaction was attributed to the H-bond withdrawing electrons from the carbonyl, thereby promoting the nucleophilic attack by an OH group.
Hydrogen bonding effects on aspartate ester reactions by Williams, C.T.; Wicks, D.A.; Jarrett, W.L. / JCT Research
This structure is responsible for the last nucleophilic attack of the epoxy ring.
Homopolymerization of epoxy monomers initiated by ... by Dell'Erba, I.E.; Williams, R.J.J. / Polymer Engineering and Science
 
 
 
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