New semiconducting radical-cation salts of chiral bis(2-hydroxylpropylthio)ethylenedithio TTFElectronic supplementary information (ESI) available. CCDC 1548672, 1548675-1548677, 1548679 and 1548680. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7ce01014a

Electrocrystallisations of the chiral donor molecule S , S -bis(2-hydroxylpropylthio)ethylenedithiotetrathiafulvalene have produced a series of 1 : 1 semiconducting radical-cation salts with anions bromide, chloride, perchlorate and hexafluorophosphate. The flexibility and hydrogen bonding ability of the donor's chiral side chains lead to three quite different packing arrangements of donor cation pairs. Conductivity is maintained despite significant separations of donor cation pairs in some cases. Chiral donor molecule S , S -bis(2-hydroxylpropylthio)ethylenedithiotetrathiafulvalene has produced a series of 1 : 1 semiconducting radical-cation salts with anions bromide, chloride, perchlorate and hexafluorophosphate.