Results 221 to 230 of about 5,976 (269)
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Journal of Physical Chemistry A, 2021
The phenomenon of antiaromaticity-aromaticity interplay in aromatic-antiaromatic (A-aA)-fused systems is studied using molecular electrostatic potential (MESP) analysis, which clearly brings out the electron-rich π-regions of molecular systems.
P. K. Anjalikrishna, S. Gadre, C. Suresh
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The phenomenon of antiaromaticity-aromaticity interplay in aromatic-antiaromatic (A-aA)-fused systems is studied using molecular electrostatic potential (MESP) analysis, which clearly brings out the electron-rich π-regions of molecular systems.
P. K. Anjalikrishna, S. Gadre, C. Suresh
semanticscholar +1 more source
Materials Science and Engineering Reports, 2019
Organic field-effect transistors (OFETs) have received significant interest due to potential applications from low-cost active circuit to wearable health care devices.
Yunlong guo, Yunqi Liu
exaly +2 more sources
Organic field-effect transistors (OFETs) have received significant interest due to potential applications from low-cost active circuit to wearable health care devices.
Yunlong guo, Yunqi Liu
exaly +2 more sources
ChemSusChem, 2021
The effect of coordination sphere around metal centers on oxygen reduction reaction (ORR) activity of transition metal macrocyclic complexes is still unclear. Here we investigate the aromaticity/antiaromaticity effect of macrocycles on ORR activity based
Youxuan Ni, Yong Lu, Kai Zhang, Jun Chen
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The effect of coordination sphere around metal centers on oxygen reduction reaction (ORR) activity of transition metal macrocyclic complexes is still unclear. Here we investigate the aromaticity/antiaromaticity effect of macrocycles on ORR activity based
Youxuan Ni, Yong Lu, Kai Zhang, Jun Chen
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Polycyclic antiaromatic hydrocarbons
Physical Chemistry Chemical Physics, 2008Magnetically induced current densities have been calculated for a series of hydrocarbons consisting of hexadehydro[12]annulene rings alternatingly fused with benzenes. The calculations show that all molecular rings of the studied molecules sustain paramagnetic ring currents.
Jonas, Jusélius, Dage, Sundholm
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Enhancing the Antiaromaticity of s-Indacene through Naphthothiophene Fusion.
Organic Letters, 2021Addressing the instability of antiaromatic compounds often involves protection with bulky groups and/or fusion of aromatic rings, thus decreasing paratropicity.
Gabrielle I. Warren +3 more
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Chemistry, 2021
A thiophene-fused 1,4-diazapentalene (TAP) was rationally designed and synthesized as a C=N-containing 4nπ-electron systems that exhibits restored antiaromaticity impaired by the doping with C=N bonds. X-ray crystallographic analysis and quantum chemical
Junichi Usuba, A. Fukazawa
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A thiophene-fused 1,4-diazapentalene (TAP) was rationally designed and synthesized as a C=N-containing 4nπ-electron systems that exhibits restored antiaromaticity impaired by the doping with C=N bonds. X-ray crystallographic analysis and quantum chemical
Junichi Usuba, A. Fukazawa
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Antiaromaticity-Promoted Radical Stability in α-Methyl Heterocyclics.
Journal of Organic Chemistry, 2021Aromaticity is a fundamental and important concept in chemistry, and usually, the enhancement of aromaticity brings additional thermodynamic stability to a compound.
Luan-Ho C. Lin, Jun Zhu
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Synthesis of antiaromatic tetrabenzodithiaamethyrin
Journal of Porphyrins and Phthalocyanines, 2021Bicyclo[2.2.2]octadiene(BCOD)-fused dithiaamethyrin 4 was synthesized via a “3+3” condensation method. Thermal conversion of the BCOD moieties afforded tetrabenzodithiaamethyrin 5. The highly planar structures of 4 and 5 were confirmed by X-ray diffraction studies. The 1H NMR, absorption and MCD spectra, together with TD-DFT calculations revealed that
Tetsuo Okujima +6 more
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Journal of the American Chemical Society, 1978
The concept of antiaromaticity as applied to 4n-ir electron monocyclic conjugated systems is examined and two sub types distinguished. Relative antiaromaticity is the term which describes cyclic systems which are less stable than acyclic con jugated analogues.
Nathan L. Bauld +3 more
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The concept of antiaromaticity as applied to 4n-ir electron monocyclic conjugated systems is examined and two sub types distinguished. Relative antiaromaticity is the term which describes cyclic systems which are less stable than acyclic con jugated analogues.
Nathan L. Bauld +3 more
openaire +1 more source