Types
The most common types of π-interactions involve:
- Metal-π Interactions: involves interaction of a metal and the face of a π system, the metal can be a cation (known as cation-π interactions) or neutral
- Polar-π interactions: involves interaction of a polar molecule and quadrupole moment a π system.
- Aromatic-aromatic interactions (π stacking): involves interactions of aromatic molecules with each other.
- Arene-perfluoroarene interaction: electron-rich benzene ring interacts with electron poor hexafluorobenzene.
- π donor-acceptor interactions: interaction between low energy empty orbital (acceptor) and a high energy filled orbital (donor).
- Anion-π interactions: interaction of anion with π system
- Cation-π interactions: interaction of a cation with a π system
- C-H-π interactions: interaction of C-H with π system: These interactions are well studied using experimental as well as computational techniques.
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