1. Chiral Semiconductor Phases: The Optically Pure D3[MIII(S,S-EDDS)]2 (D = TTF, TSF) Family.
- Author
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Chmel, Nikola Paul, Clarkson, Guy J., Troisi, Alessandro, Turner, Scott S., and Scott, Peter
- Subjects
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SEMICONDUCTORS , *CHIRALITY , *CRYSTALLOGRAPHY , *ELECTROCHEMISTRY , *ANIONS - Abstract
A new family of optically pure tetrathiafulvalenium and tetraselenafulvalenium salts, D3[MIII(S,S-EDDS)]2·nH2O (where D = TTF, TSF; M = Co, Fe, Cr; EDDS = ethylenediaminedisuccinato), were synthesized electrochemically. These phases are semiconductors with conductivities between 6.9 × 10-6 and 1.3 × 10-5 S·cm-1 (Eaca. 0.3 eV) for TTF and 2.8 × 10-4 to 2.8 × 10-5 S·cm-1 (Eaca. 0.1 eV) for TSF compounds. While some crystals suffer from twinning, other well resolved structures consist of TTF/TSF stacks which, under the influence of the chiral anion, exhibit a periodic undulation described by an elliptical helix. The crystallographic data, along with computational work, indicate charge localization in the semiconducting motifs. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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