Pseudo Jahn-Teller effect in control and rationalization of chemical transformations in two-dimensional compounds
We show that the pseudo Jahn-Teller effect (PJTE) is instrumental in predicting and rationalizing structural changes in chemical transformations of two-dimensional (2D) molecular systems by means of analyzing the symmetries and electron occupation of the ground and lowest excited electronic states a...
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Published in | Journal of physics. Conference series Vol. 833; no. 1; pp. 12010 - 12020 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
19.05.2017
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ISSN | 1742-6588 1742-6596 |
DOI | 10.1088/1742-6596/833/1/012010 |
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Abstract | We show that the pseudo Jahn-Teller effect (PJTE) is instrumental in predicting and rationalizing structural changes in chemical transformations of two-dimensional (2D) molecular systems by means of analyzing the symmetries and electron occupation of the ground and lowest excited electronic states and the energy gap between them, subject to their PJT coupling along the main distortion coordinates. Special attention is paid to rationalizing the PJTE origin of non-planarity of 2D compounds and to the restoration of their planar configurations. Examples of two series of 1,2- and 1,4-dithiin containing tricyclic compounds (carbon sulfide, thianthrene, and antracene and their derivatives) are used to demonstrate in detail the mechanism of (1) enhancement and suppression of the PJTE distortions (puckering) in redox processes, and (2) PJTE induced symmetry breaking and restoration of the planar configuration by chemical substitutions. |
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AbstractList | We show that the pseudo Jahn-Teller effect (PJTE) is instrumental in predicting and rationalizing structural changes in chemical transformations of two-dimensional (2D) molecular systems by means of analyzing the symmetries and electron occupation of the ground and lowest excited electronic states and the energy gap between them, subject to their PJT coupling along the main distortion coordinates. Special attention is paid to rationalizing the PJTE origin of non-planarity of 2D compounds and to the restoration of their planar configurations. Examples of two series of 1,2- and 1,4-dithiin containing tricyclic compounds (carbon sulfide, thianthrene, and antracene and their derivatives) are used to demonstrate in detail the mechanism of (1) enhancement and suppression of the PJTE distortions (puckering) in redox processes, and (2) PJTE induced symmetry breaking and restoration of the planar configuration by chemical substitutions. |
Author | Bersuker, I B Gorinchoy, N N |
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CitedBy_id | crossref_primary_10_1016_j_flatc_2017_10_001 crossref_primary_10_1002_qua_25704 crossref_primary_10_1007_s11696_018_0567_7 crossref_primary_10_1002_jcc_26774 crossref_primary_10_1007_s00214_018_2402_1 crossref_primary_10_1007_s00894_018_3900_8 crossref_primary_10_1007_s11224_018_1200_7 crossref_primary_10_1021_acs_chemrev_0c00718 crossref_primary_10_4236_ijoc_2018_81010 |
Cites_doi | 10.1016/j.chemphys.2015.07.015 10.1021/cr0004411 10.1139/v91-137 10.1063/1.1677527 10.1021/ic300786w 10.1017/CBO9780511524769 10.1021/om00027a030 10.1021/jp0155967 10.1063/1.3516179 10.1016/0010-8545(88)80001-8 10.1007/978-94-010-9882-3 10.1016/j.chemphys.2015.02.017 10.1021/jp3084716 10.1021/cr300279n 10.1021/om1006038 10.1021/jp054841+ 10.1021/ja973186j 10.1016/S0065-2725(08)60341-4 10.1080/0026897042000274801 10.1016/j.chemphys.2015.04.009 |
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SubjectTerms | Broken symmetry Chemical compounds Configurations Coupling (molecular) Electron states Energy gap Jahn-Teller effect Physics Restoration Two dimensional analysis |
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Title | Pseudo Jahn-Teller effect in control and rationalization of chemical transformations in two-dimensional compounds |
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