Results 151 to 160 of about 2,216 (186)
The forgotten borole: synthesis, properties and reactivity of a 1-boraindene. [PDF]
Chem SciWieprecht N +7 more
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π-extended pyrenes: from an antiaromatic buckybowl to doubly curved nanocarbons with gulf architectures. [PDF]
Chem SciLiu B +5 more
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Adding multiple electrons to helicenes: how they respond? [PDF]
Chem SciZhou Z, Petrukhina MA.
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Synthesis and Characterization of a π-Extended Clar's Goblet. [PDF]
J Am Chem SocMishra S +6 more
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6,6'-Biindeno[1,2-b]fluorene: an open-shell indenofluorene dimer. [PDF]
Chem SciSharma H +4 more
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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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All-Metal Aromaticity and Antiaromaticity
Chemical Reviews, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
Alexander I, Boldyrev, Lai-Sheng, Wang
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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
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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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