Results 81 to 90 of about 1,579 (190)
Coordinates for "Global Aromaticity and Antiaromaticity in Porphyrin Nanoring Anions"
Cartesian coordinates accompanying "Global Aromaticity and Antiaromaticity in Porphyrin Nanoring Anions", calculated using Gaussian16; B3LYP.
Martin Peeks (3291489) +3 more
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Enhancing the Antiaromaticity of s-Indacenes Through Heterocycle Fusion [PDF]
Antiaromaticity, while associated with instability, imparts beneficial properties such as decreased HOMO-LUMO energy gaps. Compounds containing antiaromatic subunits are not only of fundamental interest, but of interest as components in organic ...
Warren, Gabrielle
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With their versatile molecular topology and aromaticity, porphyrinoid systems combine remarkable chemistry with interesting photophysical properties and nonlinear optical properties.
Tatiana Woller +4 more
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Dications of p-substituted 3-phenylindenylidenefluorenes were prepared to examine the response of the resulting indenyl and fluorenyl cationic systems to magnetic measures of antiaromaticity.
Nancy S. Mills (2135851) +4 more
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Cyclic π-conjugated organic species are classical examples of (anti)aromatic compounds. Two key features that characterize their (anti)aromatic behavior are the aromatic stabilization (or destabilization) energy and the degree of bond-length equalization
Miquel Solà, Luigi Cavallo
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Recent advances in antiaromatic metallacycles
Recently, several antiaromatic metallacycles are reported, establishing a new area of (anti)aromaticity. Herein, we briefly review the syntheses and characterizations of these fascinating antiaromatic structures.
Lei Li, Yang Li, Wenfeng Jiang, Wei Bai
openaire +2 more sources
Excited-state proton transfer relieves antiaromaticity in molecules
Baird’s rule explains why and when excited-state proton transfer (ESPT) reactions happen in organic compounds. Bifunctional compounds that are [4n + 2] π-aromatic in the ground state, become [4n + 2] π-antiaromatic in the first 1ππ* states, and proton ...
Karas, Lucas José, +3 more
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Synthesis of Cyclobutadienoid-Fused Phenazines with Strongly Modulated Degrees of Antiaromaticity
The streamlined synthesis of a series of regioisomeric azaacene analogues containing fused phenazine and antiaromatic cyclobutadienoids (CBDs), using a catalytic arene–oxanorbornene annulation, followed by aromatization is reported.
Zexin Jin (327148) +2 more
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The dianion, 52−, and dication, 52+, of tetrabenzo[5.7]fulvalene represent an aromaticity/antiaromaticity continuum in which the fluorenyl system changes from aromatic in 52− to antiaromatic in 52+. Conversely, the antiaromatic dibenzotropylium system of
Abraham Yousef (2411293) +2 more
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Fully Conjugated Heteroatomic Non- and Quasi-Alternant Polyradicals
In this work, we present fully π-conjugated diradical(oid)s and tetraradical(oid)s with five-membered non-alternant cyclopentadienyl and quasi-alternant thiophene rings, the latter of which is used as a source of aromatic stabilization.
Sergi Betkhoshvili +3 more
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