| Abstract
| - Electrolytic oxidation of BEDT-TTF(bis(ethylenedithio)tetrathiafulvalene) in the presence ofanionic rheniumthiocyanato complexes has led to the crystallization of two phasescontainingRe2(NCS)10n-(n = 2, 3), whileRe(NCS)62- andRe2(NCS)82- gaveno characterizable products.(BEDT-TTF)3[Re2(NCS)10]·2CH2Cl2(1) and(BEDT-TTF)2[Re2(NCS)10]·C6H5CN(2) are both triclinic (P1̄) with unit cellparameters a = 12.185(3) Å, b=13.251(3) Å, c = 14.772(2) Å, α =63.69(1)°, β = 86.56(2)°, γ = 64.50(2)°(Z = 1) and a = 13.730(4) Å,b =14.882(4) Å, c = 16.588(4) Å, α =75.98(2)°, β = 85.63(2)°, γ = 66.95(2)°(Z = 2), respectively. Both saltspresent packing arrangements of BEDT-TTF not found before. Incompound 1 mixed layers of anions and cationscontain no stacks of BEDT-TTF. In 2 there are layers ofsegregated anions and cations, the latter having theirlong axes nearly parallel to the layers. This compound is thefirst in whichRe2(NCS)102- hasbeen structurallycharacterized. In both compounds there are numerous close SScontacts between the NCS ligands and theBEDT-TTF. The compounds are semiconductors, the conductivity beingattributed to low-dimensional hoppingrather than coherent transport. The magnetic properties of1 are modeled by a superposition of aCurie−Weisscontribution for the anion and a dimer contribution from thecation.
- Electrolytic oxidationof BEDT-TTF (bis(ethylenedithio)tetrathiafulvalene) in thepresence of anionic rhenium thiocyanato complexes has led to thecrystallization of two phases containingRe2(NCS)10n-(n = 2, 3). Both salts present packing arrangementsof BEDT-TTF not found before. The compounds are semiconductors,the conductivity being attributed to low-dimensional hopping ratherthan coherent transport.
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