A second monoclinic polymorph of 3β-chloro­cholest-5-ene

The title compound, C(27)H(45)Cl, is a second monoclinic polymorph which crystallizes in the space group P2(1) with four crystallographically independent mol­ecules in the asymmetric unit. The structure was previously reported [Bernal et al. (1940 ▶). Philos. Trans. R. Soc. London Ser. B, 239, 135–1...

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Autores principales: Khan, Mohd. Shaheen, Sulaiman, Othman, Mohamed, Issam Ahmed, Yeap, Chin Sing, Fun, Hoong-Kun
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2010
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2979588/
https://www.ncbi.nlm.nih.gov/pubmed/21579355
http://dx.doi.org/10.1107/S1600536810015722
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author Khan, Mohd. Shaheen
Sulaiman, Othman
Mohamed, Issam Ahmed
Yeap, Chin Sing
Fun, Hoong-Kun
author_facet Khan, Mohd. Shaheen
Sulaiman, Othman
Mohamed, Issam Ahmed
Yeap, Chin Sing
Fun, Hoong-Kun
author_sort Khan, Mohd. Shaheen
collection PubMed
description The title compound, C(27)H(45)Cl, is a second monoclinic polymorph which crystallizes in the space group P2(1) with four crystallographically independent mol­ecules in the asymmetric unit. The structure was previously reported [Bernal et al. (1940 ▶). Philos. Trans. R. Soc. London Ser. B, 239, 135–182; Vani & Vijayan (1979 ▶). Mol. Cryst. Liq. Cryst. 51, 253–264], also in the space group P2(1), but with two unique mol­ecules in the asymmetric unit. As in the previously reported structures, rings A and C in the mol­ecule adopt chair conformations with half-chair conformations for rings B and D. The ring junctions B–C and C–D are trans, whereas the junction A–B is quasi-trans. In the crystal structure, mol­ecules are arranged in a head-to-tail fashion along a and are stacked along the b axis.
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spelling pubmed-29795882010-12-30 A second monoclinic polymorph of 3β-chloro­cholest-5-ene Khan, Mohd. Shaheen Sulaiman, Othman Mohamed, Issam Ahmed Yeap, Chin Sing Fun, Hoong-Kun Acta Crystallogr Sect E Struct Rep Online Organic Papers The title compound, C(27)H(45)Cl, is a second monoclinic polymorph which crystallizes in the space group P2(1) with four crystallographically independent mol­ecules in the asymmetric unit. The structure was previously reported [Bernal et al. (1940 ▶). Philos. Trans. R. Soc. London Ser. B, 239, 135–182; Vani & Vijayan (1979 ▶). Mol. Cryst. Liq. Cryst. 51, 253–264], also in the space group P2(1), but with two unique mol­ecules in the asymmetric unit. As in the previously reported structures, rings A and C in the mol­ecule adopt chair conformations with half-chair conformations for rings B and D. The ring junctions B–C and C–D are trans, whereas the junction A–B is quasi-trans. In the crystal structure, mol­ecules are arranged in a head-to-tail fashion along a and are stacked along the b axis. International Union of Crystallography 2010-05-08 /pmc/articles/PMC2979588/ /pubmed/21579355 http://dx.doi.org/10.1107/S1600536810015722 Text en © Khan et al. 2010 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
Khan, Mohd. Shaheen
Sulaiman, Othman
Mohamed, Issam Ahmed
Yeap, Chin Sing
Fun, Hoong-Kun
A second monoclinic polymorph of 3β-chloro­cholest-5-ene
title A second monoclinic polymorph of 3β-chloro­cholest-5-ene
title_full A second monoclinic polymorph of 3β-chloro­cholest-5-ene
title_fullStr A second monoclinic polymorph of 3β-chloro­cholest-5-ene
title_full_unstemmed A second monoclinic polymorph of 3β-chloro­cholest-5-ene
title_short A second monoclinic polymorph of 3β-chloro­cholest-5-ene
title_sort second monoclinic polymorph of 3β-chloro­cholest-5-ene
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2979588/
https://www.ncbi.nlm.nih.gov/pubmed/21579355
http://dx.doi.org/10.1107/S1600536810015722
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