Abstract
In elementary chemical bonding theory, a rather neglected concept is a type of chemical bond that Pauling has designated as the “3-electron bond”. This type of bond is usually represented as A···B and it involves three electrons distributed amongst two overlapping atomic orbitals centred on the atoms A and B. Alternative designations are either “3-electron 2-centre” bond or “3-electron 2-orbital” bond.
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References
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Harcourt, R.D. (2016). Pauling “3-Electron Bonds”, 4-Electron 3-Centre Bonding, and the Need for an “Increased Valence” Theory. In: Bonding in Electron-Rich Molecules. Lecture Notes in Chemistry, vol 90. Springer, Cham. https://doi.org/10.1007/978-3-319-16676-6_2
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