Term: atom-bond polarizability
https://doi.org/10.1351/goldbook.AT06993

Definition:
A quantity used in perturbation HMO theory as a measure of the change in electron density, q, of atom m caused by a change in the resonance integral, β, of bond r s: \[\pi _{\text{m,rs}}=\frac{\partial q_{\text{m}}}{\partial \beta _{\text{rs}}}\]

Related Terms:
1) electron density (http://doi.org/10.1351/goldbook.E01986).
2) resonance integral (http://doi.org/10.1351/goldbook.R05337).

Source: PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1924 (https://doi.org/10.1351/pac199971101919)

Citation: 'atom-bond polarizability' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.AT06993

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