Pi-interaction
Chemical bond effect / From Wikipedia, the free encyclopedia
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In chemistry, π-effects or π-interactions are a type of non-covalent interaction that involves π systems. Just like in an electrostatic interaction where a region of negative charge interacts with a positive charge, the electron-rich π system can interact with a metal (cationic or neutral), an anion, another molecule and even another π system.[1] Non-covalent interactions involving π systems are pivotal to biological events such as protein-ligand recognition.[2]