Symmetry-allowed

Definition

In the context of organic chemistry, particularly orbitals and pericyclic reactions, a symmetry-allowed process involves transitions or reactions that occur with the preservation of symmetry in molecular orbitals of conjugated pi systems. This concept is crucial for understanding why certain pericyclic reactions occur under specific conditions by following the conservation of orbital symmetry.

Related terms

Pericyclic Reactions: A class of reactions that proceed through a cyclic redistribution of bonding electrons in a concerted fashion, often characterized by their dependency on orbital symmetries.

Molecular Orbitals: The mathematical functions describing the location and wave-like behavior of an electron in a molecule, crucial for understanding chemical bonds and reactions.

Conjugated Pi Systems: A system within a molecule consisting of alternating single and double bonds where pi electrons are delocalized over several adjacent atoms, allowing for unique chemical reactivity.