Revision of the dual substituent parameter treatment using the DFT-calculated reaction energies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F07%3A00019325" target="_blank" >RIV/60461373:22340/07:00019325 - isvavai.cz</a>

Alternative codes found

RIV/61388963:_____/07:00087599

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Revision of the dual substituent parameter treatment using the DFT-calculated reaction energies

Original language description

The dual substituent parameter (DSP) data treatment is a broadly used procedure correlating the reaction energies or other physical quantities with two sets of substituent constants, inductive (I) and resonance (R). It was here revised using the most extensive sets of experimental reactivities available in the literature and two sets of reaction energies calculated at the level B3LYP/6-311+G(d,p): acidities of 4-substituted benzoic acids and 5-(E)-substituted penta-2,4-diene-(E)-acids with 19 or 15 common substituents. The latter two series enabled us to investigate the substituent effects more systematically than it was ever possible with the experimental data; this means in particular separate treatment of the undissociated acid molecules and of their anions, further separation of donor and acceptor substituents. In addition, the standard statistical treatment was improved when testing the significance of the resonance term. The DSP treatment is not valid generally, this applies both

Czech name

Revision of the dual substituent parameter treatment using the DFT-calculated reaction energies

Czech description

The dual substituent parameter (DSP) data treatment is a broadly used procedure correlating the reaction energies or other physical quantities with two sets of substituent constants, inductive (I) and resonance (R). It was here revised using the most extensive sets of experimental reactivities available in the literature and two sets of reaction energies calculated at the level B3LYP/6-311+G(d,p): acidities of 4-substituted benzoic acids and 5-(E)-substituted penta-2,4-diene-(E)-acids with 19 or 15 common substituents. The latter two series enabled us to investigate the substituent effects more systematically than it was ever possible with the experimental data; this means in particular separate treatment of the undissociated acid molecules and of their anions, further separation of donor and acceptor substituents. In addition, the standard statistical treatment was improved when testing the significance of the resonance term. The DSP treatment is not valid generally, this applies both

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CC - Organic chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physical Organic Chemistry

ISSN

0894-3230

e-ISSN

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Volume of the periodical

20

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

454-462

UT code for WoS article

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EID of the result in the Scopus database

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