Research Article: Ethyl 2-[4,5-bis­(butyl­sulfan­yl)-1,3-dithiol-2-yl­idene]-1,3-dithiolo[4,5-c]pyrrole-4-carboxyl­ate

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Dong-Feng Li, Xiao-Fei Zhu, Shuang Guan, Rui-Bin Hou.


In the title mol­ecule, C19H25NO2S6, the butyl chains are each disordered over two conformations in a 0.689 (10):0.311 (10) ratio. In the crystal, pairs of N—H⋯O hydrogen bonds link mol­ecules into centrosymmetric dimers. Short S⋯S contacts of 3.553 (4) Å are observed.

Partial Text

For background to tetra­thia­fulvalenes, see: Jeppesen et al. (1999 ▶); Hansel et al. (2004 ▶). For details of the synthesis, see: Hou et al. (2010 ▶). For a similar structure, see: Hou & Yin (2010 ▶).