## Wikipedia - Abgangsgruppe (de) Wikipedia - Nucleofuge (en) nucleofuge

https://doi.org/10.1351/goldbook.N04246
A @L03493@ that carries away the bonding electron pair. For example, in the @H02902@ of an alkyl chloride, Cl is the nucleofuge. The tendency of atoms or groups to depart with the bonding electron pair is called nucleofugality. The adjective is nucleofugal.