Nucleophile vs Electrophile

Nucleophiles and electrophiles represent opposite ends of the spectrum. A **nucleophile** (nucleus = ‘center’) is a species – often a negatively charged ion or molecule – that donates a pair of electrons to form a new bond. Think of it as the ‘electron giver.’ Conversely, an **electrophile** (electro = ‘electricity’) is a species that accepts electrons to form a bond; it’s the ‘electron receiver. These opposing forces drive many chemical reactions. Nucleophiles are attracted to positive charges, while electrophiles are drawn to negative charges. The interaction between a nucleophile and an electrophile is the cornerstone of countless reactions, including substitution and addition processes.