Stereoisomeric semiconducting radical cation salts of chiral bis(2-hydroxypropylthio)ethylenedithioTTF with tetrafluoroborate anions

Martin, L ORCID: https://orcid.org/0000-0002-5330-5700, Wallis, JD ORCID: https://orcid.org/0000-0001-7259-8783, Guziak, MA, Oxspring, J, Lopez, JR, Nakatsuji, S, Yamada, J and Akutsu, H, 2014. Stereoisomeric semiconducting radical cation salts of chiral bis(2-hydroxypropylthio)ethylenedithioTTF with tetrafluoroborate anions. CrystEngComm, 16 (24), pp. 5424-5429. ISSN 1466-8033

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Abstract

The new chiral TTF-based donor molecule bis(2-hydroxypropylthio)ethylenedithiotetrathiafulvalene has produced enantiopure R,R and S,S radical cation salts with the tetrafluoroborate anion as well as the nearly isostructural meso/racemate mixture. The enantiopure R,R or S,S salts are both 1:1 semiconducting salts with activation energies of 0.19–0.24 eV, both crystallising in the orthorhombic space group C2221. The semiconducting salt containing both meso and racemic donor cations has a very similar crystal structure but crystallising in the monoclinic space group C2/c (β = 91.39°) with similar S⋯S interactions but a smaller activation energy of 0.15–0.17 eV. This is in contrast to previous families of this type where the disordered racemate has a larger activation energy than its enantiopure salts.

Item Type:	Journal article
Publication Title:	CrystEngComm
Creators:	Martin, L., Wallis, J.D., Guziak, M.A., Oxspring, J., Lopez, J.R., Nakatsuji, S., Yamada, J. and Akutsu, H.
Publisher:	Royal Society of Chemistry
Place of Publication:	Cambridge
Date:	2014
Volume:	16
Number:	24
ISSN:	1466-8033
Identifiers:	Number Type 10.1039/c4ce00116h DOI
Rights:	© Royal Society of Chemistry 2014
Divisions:	Schools > School of Science and Technology
Record created by:	EPrints Services
Date Added:	09 Oct 2015 10:06
Last Modified:	09 Jun 2017 13:18
URI:	https://irep.ntu.ac.uk/id/eprint/7651

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