Novel sulfonate containing ET based synmetals

Abstract

Electrocrystallization of ET in the presence of aromatic and aliphatic sulfonate anions has led to many new ET salts. These new ET based sulfonate complexes are characterized with use of x-ray diffraction, four-probe conductivity measurements, ESR and Raman spectroscopies. A new κ(4 × 4) donor packing motif was observed in (ET) 2(C 6H 5CH 2SO 3)(H 2O). Strong hydrogen bonding between the sulfonate anion S-O and the donor ethylene C-H provides the driving force for the ET salt formation. Many of these new sulfonate salts are highly conductive with some remaining metallic to ~ 4 K.