title: Structures of four polymorphs of the pesticide dithianon solved from X-ray powder diffraction data.
abstract: The crystal structures of four polymorphs of the pesticide dithianon (5,10-dihydro-5,10-dioxonaphtho[2,3-b]-1,4-dithiine-2,3-dicarbonitrile) have been solved from powder diffraction data and refined using the Rietveld method. Three polymorphs crystallize in non-centrosymmetric space groups. Two polymorphs have Z' > 1. The structures are assembled via interactions between carbonyl groups of quinoid fragments into layers which further interact only by weak interactions.
authors.affiliation: Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany.
authors.forename: Ivan
authors.initials: I
authors.lastname: Halasz
authors.forename: Robert
authors.initials: R
authors.lastname: Dinnebier
authors.forename: Tiziana
authors.initials: T
authors.lastname: Chiodo
authors.forename: Heidi
authors.initials: H
authors.lastname: Saxell
mesh_terms: D000880:Anthraquinones / Q000737:chemistry*; D003460:Crystallization; D008958:Models, Molecular; D010575:Pesticides / Q000737:chemistry*; D033362:Powder Diffraction; D014961:X-Ray Diffraction
chemical_list: D000880:Anthraquinones; D010575:Pesticides; C018529:dithianone