BEDT-TTF based organic conductors with metal-halide/pseudohalide anions

To date, three κ-(ET)2X salts (X- = Cu(NCS)2-, I3- and Ag(CN)2-·H2O) and four other κ-like salts [(ET)4Hg3X8, X- = Cl-, Br-; (MDT-TTF)2AuI2, and (MT)2Au(CN)2] have been reported. Among these seven compounds, five of them are superconductors either under ambient or applied pressure. More than half of these compounds contain polymeric anions. Except the triiodide salt, all the aformentioned anions consist of group IB or IIB metals with halides (Cl-, Br-, I-) pseudo halides (CN-, SCN-) ligands. The authors have explored the electrocrystallization of ET donor molecules with group IB, IIB and other metal halide or pseudohalide anions. The synthesis, conductivities, and ESR properties of the results ET salts are presented