Various synthetic procedures for preparing BEDT-TTF are critically examined. Starting from readily available thiapendione, BEDT-TTF can be made in a high yield, simple, two-step synthesis. Electrochemical crystal growth of charge transfer complexes of BEDT-TTF typically involves the formation of multiple phases and stoichiometries. In the case of perrhenate (ReO- 4) at least five different complexes have been identified. Controlled preparation of the superconducting phase (BEDT-TTF2ReO4) remains an elusive goal.
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Engler et al. (1984) studied this question.