Results 31 to 40 of about 22,828 (309)
Double Aromaticity of Franck-Condon Excited States of Cyclo[16]carbon [PDF]
, 2023 Excited-state aromaticity of molecular rings is a very interesting and meaningful topic. Inspired by the recent realization of cyclo[16]carbon (C16) with double anti-aromaticity characteristics of singlet ground state (S0 state), here we demonstrate that
Xiufen, Yan +3 more
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Hyperconjugative aromaticity and protodeauration reactivity of polyaurated indoliums
Nature Communications, 2019 Hyperconjugative aromaticity combines the concepts of hyperconjugation and aromaticity and explains cyclopentadiene stability. Here, the authors demonstrate extended hyperconjugative aromaticity in a metallated indole ring, which shows extended electron ...
Kui Xiao, Yu Zhao, Jun Zhu, Liang Zhao
doaj +1 more source
Chemistry, 2021 Polycyclic aromatic hydrocarbons (PAH) are a prominent substance class with a variety of applications in molecular materials science. Their electronic properties crucially depend on the bond topology in ways that are often highly non-intuitive.
Felix Plasser
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Aromaticity and Antiaromaticity in the Excited States of Porphyrin Nanorings [PDF]
, 2019 Aromaticity can be a useful concept for predicting the behavior of excited states. Here we show that π-conjugated porphyrin nanorings exhibit size-dependent excited-state global aromaticity and antiaromaticity, for rings containing up to eight porphyrin ...
Takayuki, Kobatake +6 more
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Emerging frontiers in aromaticity
, 2023 In this themed collection, we embark on a captivating journey into the realm of aromaticity, a fundamental concept that has attracted chemists for nearly two centuries. This virtual collection offers a comprehensive overview of the recent advances in the
Israel Fernández +7 more
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The Study of Y-Aromaticity. IV. Tridentenes with Irregular Arm Lengths [PDF]
, 2021 To increase the number of synthetic targets having Y-aromaticity, we proposed (n, l, m)-tridentenes, in which the lengths of the three linear conjugated systems, extending from the central atom of the Y-shaped structure of n-tridentene were made ...
Takayuki, OHMAE
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Molecules, 2018 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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Recent Advances in the Reactions of Cyclic Carbynes
Molecules, 2020 The acyclic organic alkynes and carbyne bonds exhibit linear shapes. Metallabenzynes and metallapentalynes are six- or five-membered metallacycles containing carbynes, whose carbine-carbon bond angles are less than 180°.
Qian Su +7 more
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The Silacyclobutene Ring: An Indicator of Triplet State Baird-Aromaticity
Inorganics, 2017 Baird’s rule tells that the electron counts for aromaticity and antiaromaticity in the first ππ* triplet and singlet excited states (T1 and S1) are opposite to those in the ground state (S0). Our hypothesis is that a silacyclobutene (SCB) ring fused with
Rabia Ayub +2 more
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Adaptive Aromaticity in 18e Metallapentalenes
, 2023 Complexes with aromaticity in both the lowest singlet state (S0) and the lowest triplet state (T1) (denoted as adaptive aromaticity) are rare because according to Hückel’s and Baird’s rules, a species could be aromatic in either the S0 or T1 state in ...
Yifei Fang (10717932) +5 more
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