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Updated: Jul 18, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Cis- and trans-bis(2-cyanoethylsulfanyl)(decane-1,10-diyldithio)tetrathiafulvalene
Sune Nygaard1, Amar H Flood, Jan O Jeppesen
1Department of Physics and Chemistry, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
Abstract:
The isomeric title compounds, 2,7-bis(2-cyanoethylsulfanyl)-3,6-(decane-1,10-diyldithio)tetrathiafulvalene and 2,6-bis(2-cyanoethylsulfanyl)-3,7-(decane-1,10-diyldithio)tetrathiafulvalene, both C22H28N2S8, comprise bis(2-cyanoethylsulfanyl)tetrathiafulvalene units tethered by a saturated decamethylenedithio linker attached in either a cis or a trans manner. The tetrathiafulvalene (TTF) group is planar in the cis isomer, but distorted significantly from planarity and twisted about its long axis in the trans isomer. In both structures, intermolecular interactions are segregated into regions in which TTF units are brought into close contact and regions where the polymethylene chains are brought into close contact. In the cis isomer, TTF units exhibit pi-pi stacking interactions, while in the trans isomer they do not.
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