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A covalent bonding interaction with electron density cylindrically symmetric about the internuclear axis, commonly formed by head-on overlap of orbitals.
wp-physics-chemical-bondopenstax-chemistry-2eiupac-chemical-bondEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Sigma bonds are covalent bonding interactions classified by their rotational symmetry about the internuclear axis rather than by a unique localized-orbital picture.
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 orbitals and bonding combinations by their symmetry relative to the internuclear axis, yielding sigma and pi bonding descriptions within the model.
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 contains a sigma component along the carbon–oxygen internuclear axis; the molecular-orbital description remains the more general account of its electron density.
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