lone pair

(redirected from Electron lone pair)

lone pair

n
(Chemistry) chem a pair of valency electrons of opposite spin that are not shared between the atoms in a molecule and are responsible for the formation of coordinate bonds
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References in periodicals archive ?
[45-48]havestudied theeffect of halogenbond between C[F.sub.3]X (X = Cl, Br, I) and various electron lone pair donors on the vibrations of the participants.
Previous work on [sup.14]N NMR indicated that the donation of the electron lone pair by nitrogen in the halogen bond relationship led to more shielding of nitrogen [49].
In the [sup.19]F NMR study of 2'-F-2'-deoxyarabinoflavoproteins [60], the chemical shift of fluorine moves to a higher frequency when the fluorine atom donated its electron lone pair in hydrogen bond.
The SERS effect is stronger in molecules with electron lone pairs and also in molecules with [pi] electron density.
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