cation-π en · NOUN
Etymology
From cation + translingual π, where π is from π system. Aromatic residues are called π systems because they contain a lot of π links, links between p electrons.
Meanings
- (physical, uncountable) A noncovalent interaction between a cation, a positive ion like Li⁺ or Na⁺, and an aromatic residue such as benzene, ethylene, acetylene.