title: Crystal structure of 9,10-bis-(1,3-di-thiol-2-yl-idene)-9,10-di-hydro-anthracene.
abstract: The crystal structure of the well-studied 9,10-bis-(1,3-di-thiol-2-yl-idene)-9,10-di-hydro-anthracene mol-ecule, C20H12S4, (I), also known as exTTF, is reported. The mol-ecular structure of (I) consists of a di-hydro-anthracene moiety with two 1,3-di-thiol-2-yl-idene substituents. This is a saddle-shaped mol-ecule, which inter-acts with a close neighbor through various π-π and C-H⋯π contacts to form a 'dimer'. These 'dimers' inter-act through a series of C-H⋯S and C-H⋯π contacts to construct a complex three-dimensional extended structure.
authors: Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
authors: Yi
authors: Y
authors: Ren
authors: Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
authors: Semin
authors: S
authors: Lee
authors: Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
authors: Jeffery A
authors: JA
authors: Bertke
authors: Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
authors: Jeffrey S
authors: JS
authors: Moore
keywords: TTF; Wittig–Horner reaction; crystal structure; exTTF; tetra­thia­fulvalene