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A covalent bonding interaction with a nodal plane containing the internuclear axis, commonly formed by side-on overlap and often accompanying a sigma bond in multiple bonds.
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This is an authored directed relation from the source endpoint to the target endpoint.
Pi bonds are covalent bonding interactions classified by a nodal plane containing the internuclear axis; conjugation and delocalization can distribute that interaction across several atoms.
The target is a member or subtype of the broader source class.
wp-physics-chemical-bondopenstax-chemistry-2eiupac-chemical-bondThis is an authored directed relation from the source endpoint to the target endpoint.
Molecular-orbital theory labels pi orbitals and their bonding combinations by the nodal plane containing the internuclear axis, providing a symmetry-based description that need not imply localized electron pairs.
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
wp-physics-chemical-bondopenstax-chemistry-2eiupac-chemical-bondEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
A conventional carbonyl bond description includes a pi component with its characteristic nodal symmetry; conjugation can delocalize that component over a larger molecular framework.
The source is a material constituent, structural component, or underlying quantum field whose excitation realizes the target physical system or particle. The edge label and detail must distinguish composition from field excitation; neither implies a simple classical sum of parts.
wp-physics-chemical-bondopenstax-chemistry-2eiupac-chemical-bond