パイ共きょう役やく

noun

pi conjugation

Technical term in organic chemistry referring to a conjugated system of alternating single and multiple bonds where π electrons are delocalized.

• ベンゼン環かんはパイ共きょう役やく系けいの代だい表ひょう例れいである。

  The benzene ring is a typical example of a pi-conjugated system.