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

We have encountered two polymorphs of the title compound, C(24)H(16)B(2)OS(2), both of which display almost the same unit-cell parameters. Compound (I) crystallizes in the non-centrosymmetric space group P2(1) with four mol­ecules in the asymmetric unit. These mol­ecules are related by pseudosymmetr...

Descripción completa

Detalles Bibliográficos
Autores principales: Radtke, Julian, Lerner, Hans-Wolfram, Bolte, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2019
Materias:
Research Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6505595/
https://www.ncbi.nlm.nih.gov/pubmed/31110812
http://dx.doi.org/10.1107/S205698901900522X
Descripción
Sumario:We have encountered two polymorphs of the title compound, C(24)H(16)B(2)OS(2), both of which display almost the same unit-cell parameters. Compound (I) crystallizes in the non-centrosymmetric space group P2(1) with four mol­ecules in the asymmetric unit. These mol­ecules are related by pseudosymmetry. As a result, the space group looks like P2(1)/c, but the structure cannot be refined successfully in that space group. Compound (II) on the other hand crystallizes in the centrosymmetric space group P2(1)/c with only two mol­ecules in the asymmetric unit. The crystals studied for (I) and (II) were both non-merohedral twins.

Ejemplares similares