sigma bond


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sigma bond

[′sig·mə ‚bänd]
(physical chemistry)
The chemical bond resulting from the formation of a molecular orbital by the end-on overlap of atomic orbitals.
References in periodicals archive ?
This is because the crystal structure is solved using the electron density map, and the electrons of the hydrogen atom are mostly between the hydrogen and carbon atoms' nuclei in the sigma bond.
The tool is then twisted 90 degrees, breaking an internal pi bond, and pulled away to break the remaining sigma bond, leaving a single carbon atom bonded to the dimer on the surface.