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Preferred Label : natural bond orbital;

Detailed label : natural bond orbital (NBO);

IUPAC acronym : NBO;

IUPAC definition : The orbital which is formed from natural hybrid orbitals. For a localized σ-bond between atoms A and B, the NBO is: \[σ _{{AB}} c_{{A}}\ {h}_{{A}} c_{{B}}\ \mathrm{h}_{{B}}\] where hA and hB are the natural hybrids centred on atoms A and B. NBOs closely correspond to the picture of localized bonds and lone pairs as basic units of molecular structure, so that is possible to conveniently interpret i ab initio /i wave-functions in terms of the classical Lewis structure concepts by transforming these functions to NBO form.;

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The orbital which is formed from natural hybrid orbitals. For a localized σ-bond between atoms A and B, the NBO is: \[σ _{{AB}} c_{{A}}\ {h}_{{A}} c_{{B}}\ \mathrm{h}_{{B}}\] where hA and hB are the natural hybrids centred on atoms A and B. NBOs closely correspond to the picture of localized bonds and lone pairs as basic units of molecular structure, so that is possible to conveniently interpret i ab initio /i wave-functions in terms of the classical Lewis structure concepts by transforming these functions to NBO form.

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31/07/2025


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