We report on the construction and application of a new bond-current additivity scheme for polybenzenoid hydrocarbons. The method is based on identification of the smaller substructures contained in the system, up to tricyclic subunits. Thus, it enables the prediction of any cata-condensed unbranched polybenzenoid hydrocarbon, using a library consisting of only four building blocks. The predicted bond-currents can then be used to generate Nucleus Independent Chemical Shift (NICS) values, the results of which validate previous observations of additivity with NICS-XY-Scans. The limitations of the method are probed, leading to clearly delineated and apparently constant error boundaries, which are independent of the molecular size. It is shown that there is a relationship between the accuracy of the predictions and the molecular structure and specific motifs that are especially challenging are identified. The results of the additivity method, combined with the transparent description of its strengths and weaknesses, ensure that this method can be used with well-defined reliability for characterization of polybenzenoid hydrocarbons. The resource-efficient and rapid nature of the method makes it a promising tool for screening and molecular design.
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14 January 2021
Research Article|
January 11 2021
Predicting bond-currents in polybenzenoid hydrocarbons with an additivity scheme Available to Purchase
Special Collection:
Special Collection in Honor of Women in Chemical Physics and Physical Chemistry
Eno Paenurk
;
Eno Paenurk
Laboratorium für Organische Chemie
, ETH Zurich, Switzerland
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Stefan Feusi
;
Stefan Feusi
Laboratorium für Organische Chemie
, ETH Zurich, Switzerland
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Renana Gershoni-Poranne
Renana Gershoni-Poranne
a)
Laboratorium für Organische Chemie
, ETH Zurich, Switzerland
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Eno Paenurk
Stefan Feusi
Renana Gershoni-Poranne
a)
Laboratorium für Organische Chemie
, ETH Zurich, Switzerland
a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the JCP Special Collection in Honor of Women in Chemical Physics and Physical Chemistry.
J. Chem. Phys. 154, 024110 (2021)
Article history
Received:
November 20 2020
Accepted:
December 20 2020
Citation
Eno Paenurk, Stefan Feusi, Renana Gershoni-Poranne; Predicting bond-currents in polybenzenoid hydrocarbons with an additivity scheme. J. Chem. Phys. 14 January 2021; 154 (2): 024110. https://doi.org/10.1063/5.0038292
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