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Int. J. Mol. Sci. 2016, 17(11), 1779;

Linear Response Function of Bond-Order

Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyoanaka, Osaka 560-0043, Japan
Author to whom correspondence should be addressed.
Academic Editor: Mihai V. Putz
Received: 31 August 2016 / Revised: 12 October 2016 / Accepted: 14 October 2016 / Published: 25 October 2016
(This article belongs to the Special Issue Chemical Bond and Bonding 2016)
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We present the linear response function of bond-orders (LRF-BO) based on a real space integration scheme for molecular systems. As in the case of the LRF of density, the LRF-BO is defined as the response of the bond order of the molecule for the virtual perturbation. Our calculations show that the LRF-BO enables us not only to detect inductive and resonating effects of conjugating systems, but also to predict pKa values on substitution groups via linear relationships between the Hammett constants and the LRF-BO values for meta- and para-substituted benzoic acids. More importantly, the LRF-BO values for the O-H bonds strongly depend on the sites to which the virtual perturbation is applied, implying that the LRF-BO values include essential information about reaction mechanism of the acid-dissociation of substituted benzoic acids. View Full-Text
Keywords: linear response function; bond order; acid dissociation reaction linear response function; bond order; acid dissociation reaction

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Suzuki, N.; Mitsuta, Y.; Okumura, M.; Yamanaka, S. Linear Response Function of Bond-Order. Int. J. Mol. Sci. 2016, 17, 1779.

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