Polymorphism and pseudosymmetry of 10,10′-oxybis(9-thia-10-hydro-10-boraanthracene)

We have encountered two polymorphs of the title compound, C24H16B2OS2, both of which display almost the same unit-cell parameters. Compound (I) crystallizes in the non-centrosymmetric space group P21 with four mol­ecules
We have encountered two polymorphs of the title compound, C24H16B2OS2, both of which display almost the same unit-cell parameters. Compound (I) crystallizes in the non-centrosymmetric space group P21 with four mol­ecules in the asymmetric unit. These mol­ecules are related by pseudosymmetry. As a result, the space group looks like P21/c, but the structure cannot be refined successfully in that space group. Compound (II) on the other hand crystallizes in the centrosymmetric space group P21/c with only two mol­ecules in the asymmetric unit. The crystals studied for (I) and (II) were both non-merohedral twins.
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Metadaten
Author:Julian Radtke, Hans-Wolfram Lerner, Michael Bolte
URN:urn:nbn:de:hebis:30:3-510754
DOI:http://dx.doi.org/10.1107/S205698901900522X
ISSN:2056-9890
Parent Title (English):Acta crystallographica. Section E, Crystallographic communications
Publisher:International Union of Crystallography ; National Center for Biotechnology Information, U.S. National Library of Medicine
Place of publication:Chester ; Bethesda, MD
Contributor(s):A. J. Lough
Document Type:Article
Language:English
Year of Completion:2019
Date of first Publication:2019/04/25
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/09/16
Tag:crystal structure; polymorphism; pseudosymmetry; twinning
Volume:75
Issue:5
Pagenumber:30
First Page:690
Last Page:694
Note:
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
HeBIS PPN:453972764
Institutes:Biochemie und Chemie
Dewey Decimal Classification:540 Chemie und zugeordnete Wissenschaften
Sammlungen:Universitätspublikationen
Open-Access-Publikationsfonds:Biochemie, Chemie und Pharmazie
Licence (German):License LogoCreative Commons - Namensnennung 4.0

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