2,11-Dibromo-5,8-dibut­yl[4]helicene

A racemic mixture of the title compound, C(26)H(26)Br(2), a brominated [4]helicene, crystallizes, forming columns of stacked mol­ecules. There are two crystallographically unique mol­ecules in the asymmetric unit, both with the same helical handedness. As is typical with helicene congeners, the uniq...

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Autores principales: Isobe, Hiroyuki, Matsuno, Taisuke, Hitosugi, Shunpei, Nakanishi, Waka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2012
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3344169/
https://www.ncbi.nlm.nih.gov/pubmed/22606172
http://dx.doi.org/10.1107/S1600536812013141
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author Isobe, Hiroyuki
Matsuno, Taisuke
Hitosugi, Shunpei
Nakanishi, Waka
author_facet Isobe, Hiroyuki
Matsuno, Taisuke
Hitosugi, Shunpei
Nakanishi, Waka
author_sort Isobe, Hiroyuki
collection PubMed
description A racemic mixture of the title compound, C(26)H(26)Br(2), a brominated [4]helicene, crystallizes, forming columns of stacked mol­ecules. There are two crystallographically unique mol­ecules in the asymmetric unit, both with the same helical handedness. As is typical with helicene congeners, the unique mol­ecules show short inter­atomic contacts between H atoms at the fjord region, with H⋯H distances of 1.87 and 1.94 Å. Mol­ecules with the same helical handedness segregate in the crystal packing, forming homochiral columns. The stacked mol­ecules are piled in a column with alternate orientations. The shortest C⋯C distance in the stacked mol­ecules is 3.306 (4) Å.
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spelling pubmed-33441692012-05-17 2,11-Dibromo-5,8-dibut­yl[4]helicene Isobe, Hiroyuki Matsuno, Taisuke Hitosugi, Shunpei Nakanishi, Waka Acta Crystallogr Sect E Struct Rep Online Organic Papers A racemic mixture of the title compound, C(26)H(26)Br(2), a brominated [4]helicene, crystallizes, forming columns of stacked mol­ecules. There are two crystallographically unique mol­ecules in the asymmetric unit, both with the same helical handedness. As is typical with helicene congeners, the unique mol­ecules show short inter­atomic contacts between H atoms at the fjord region, with H⋯H distances of 1.87 and 1.94 Å. Mol­ecules with the same helical handedness segregate in the crystal packing, forming homochiral columns. The stacked mol­ecules are piled in a column with alternate orientations. The shortest C⋯C distance in the stacked mol­ecules is 3.306 (4) Å. International Union of Crystallography 2012-03-31 /pmc/articles/PMC3344169/ /pubmed/22606172 http://dx.doi.org/10.1107/S1600536812013141 Text en © Isobe et al. 2012 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Organic Papers
Isobe, Hiroyuki
Matsuno, Taisuke
Hitosugi, Shunpei
Nakanishi, Waka
2,11-Dibromo-5,8-dibut­yl[4]helicene
title 2,11-Dibromo-5,8-dibut­yl[4]helicene
title_full 2,11-Dibromo-5,8-dibut­yl[4]helicene
title_fullStr 2,11-Dibromo-5,8-dibut­yl[4]helicene
title_full_unstemmed 2,11-Dibromo-5,8-dibut­yl[4]helicene
title_short 2,11-Dibromo-5,8-dibut­yl[4]helicene
title_sort 2,11-dibromo-5,8-dibut­yl[4]helicene
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3344169/
https://www.ncbi.nlm.nih.gov/pubmed/22606172
http://dx.doi.org/10.1107/S1600536812013141
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AT nakanishiwaka 211dibromo58dibutyl4helicene

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