116424-06-7Relevant articles and documents
Organometallic Compounds with o-Phenylene Substituents. Part XV. Hexamethoxy-tetrachalcogena-tetrahydropentacenes
Berges, Peer,Klar, Guenter
, p. 599 - 604 (2007/10/02)
The title compounds 4 and 5 were prepared by reaction of 1,4-dimethoxy-2,5-bis(3,4-dimethoxyphenylthio)benzene (8) with sulfur dichloride and selenium dioxide, resp., and characterized by 1H NMR and MS spectra.An X-ray analysis of 4 shows the compound to have a chair form, i.e. each of its two thiantrene units are folded at their SS axes in such a way that the two peripheral rings are found at different sites of the central ring plane (angles of fold 130.5 deg).The methoxy groups of the peripheral rings are coplanar, those of the central ring perpendicular to the corresponding ring planes.Bond distances and angles of 4 are in the normal range (CS 177.5 pm, CSC 100.2 deg). - Keywords: 2,3,6,9,10,13-Hexamethoxy-5,7,12,14-tetrathia-5,7,12,14-tetrahydropentacene, 2,3,6,9,10,13-Hexamethoxy-5,12-dithia-7,14-diselena-5,7,12,14-tetrahydropentacene, Synthesis, 1H NMR Spectra, X-Ray