Elementorganische Verbindungen mit ö-Phenylenresten, XI [1] 3:l-Komplexe von Hexachlor-dibenzo-p-dioxin-2,3-chinon mit 2,3,7,8-Tetramethoxythianthren und -selenanthren / Organometallic Compounds with o-Phenylene Substituents, Part XI [1] 3:1 Complexes of Hexachloro-dibenzo-p-dioxin-2,3-quinone with 2,3,7,8-Tetram ethoxythianthrene and Selenanthrene

Open Access
Publisher Website
Google Scholar
Abstract
The title com pounds can be isolated from concentrated solutions of 2,3,7,8-tetramethoxy thianthrene or selenanthrene and tetrachloro-o-benzoquinone as dark blue crystals. Bond distances and bond and folding angles of the components indicate these com pounds to be charge transfer complexes in which the tetramethoxy thianthrene or selenanthrene molecules act as donors (D), the hexachloro-dibenzo-p-dioxin-2,3-quinone molecules as acceptors (A). In the asymmetric units of the two isostructural complexes an acceptor, a donor and another acceptor molecule are arranged parallel to each other. A third acceptor molecule is placed at the front side of the A1 ,D ,A2-arrangement. In the crystal the A1, D, A2,(A3) units are connected by centres of symmetry leading to A1 ,D ,A2 , A1',D',A2', . . . stacks in which the aryl rings of the halves of the molecules are equidistant and parallel to each other. The mean distances between the rings are 340 and 345 pm, respectively

This publication has 0 references indexed in Scilit: