Results 231 to 240 of about 5,976 (269)
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Antiaromaticity in Monocyclic Conjugated Carbon Rings
Chemical Reviews, 20011326 10. Summary 1327 11. Triplet States 1327 12. Origin of Aromaticity and Antiaromaticity 1328 13.
Kenneth B Wiberg
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Chemistry - A European Journal, 2018 Antiaromatic 1,5‐Diaza‐s‐indacenes
Angewandte Chemie International Edition, 2021Abstracts‐Indacene is a classical non‐alternant hydrocarbon that contains 12 π‐electrons in a cyclic π‐conjugation system. Herein, we report its nitrogen‐doped analogue, 1,5‐diaza‐s‐indacene. 1,5‐Diaza‐s‐indacenes were readily prepared from commercially available 2,5‐dichlorobenzene‐1,4‐diamine through a two‐step transformation consisting of a ...
Kensuke Hanida +6 more
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Antiaromatic Metallacyclopentatriene Complexes
Journal of the American Chemical SocietyThere is no report on the (anti)aromaticity of metallacyclopentatrienes, one kind of common and important five-membered metallacycles. This work presents the novel synthesis of osmium cis-biscarbene complexes and their oxidation to osmacyclopentatrienes. The osmacyclopentatriene unit is antiaromatic, as revealed by experimental and theoretical studies.
Bingjie Fu +5 more
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Facile Synthesis of Polycyclic Pentalenes with Enhanced Hückel Antiaromaticity
Angewandte Chemie - International Edition, 2017Aiko Fukazawa, Shigehiro Yamaguchi
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The Interplay of Aromaticity and Antiaromaticity in N-Doped Nanographenes.
Journal of Physical Chemistry A, 2020The aromaticity of three non-planar, fully conjugated aza-nanographenes built around a pyrrolo[3,2-b]pyrrole core is assessed through application of two different computational procedures - GIMIC and NICS.
Isaac Benkyi +5 more
semanticscholar +1 more source
Dibenzoberylloles: antiaromatic s-block fluorene analogues
Chemical Communications, 2023The first Lewis-base-stabilised dibenzoberylloles are prepared, one of which undergoes a complex but selective thermal conversion to a loosely bound beryllium-alkene π complex and two-electron reduction to an aromatic dianion.
Tobias Tröster +5 more
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Angewandte Chemie International Edition in English, 1968
AbstractAccording to quantum mechanical calculations, systems with 4n π electrons ought to have anti‐aromatic character, i.e. be destabilized by resonance. This prediction is examined for the case of cyclopropenyl anion, the simplest system having 4n π electrons (n = 1).
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AbstractAccording to quantum mechanical calculations, systems with 4n π electrons ought to have anti‐aromatic character, i.e. be destabilized by resonance. This prediction is examined for the case of cyclopropenyl anion, the simplest system having 4n π electrons (n = 1).
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Diazadioxa[8]circulenes: Planar Antiaromatic Cyclooctatetraenes
Chemistry – A European Journal, 2013AbstractIn this paper we describe a new class of antiaromatic planar cyclooctatetraenes: the diazadioxa[8]circulenes. The synthesis was achieved by means of a new acid‐mediated oxidative dimerization of 3,6‐dihydroxycarbazoles to yield the diazadioxa[8]circulenes in high yields.
Hensel, Thomas +11 more
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Single-molecule conductance of dibenzopentalenes: antiaromaticity and quantum interference.
Chemical Communications, 2020The effects of antiaromaticity and destructive quantum interference (DQI) are investigated on the charge transport through dibenzo-[a,e]pentalene (DBP). 5,10-Connectivity gives high single-molecule conductance whereas 2,7 gives low conductance due to DQI.
Maximilian Schmidt +7 more
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