Crystal structures and electrical properties of ET3Cl2.2H2O and ET4Cl2.4H2O organic metals

An Efficient, Redox-Enhanced Pair of Hydrogen-Bond Tweezers for Chloride Anion Recognition, a Key Synthon in the Construction of a Novel Type of Organic Metal based on the Secondary Amide-Functionalized Ethylenedithiotetrathiafulvalene, β‘ ‘-(EDT-TTF-CONHMe)2[Cl·H2O]

“…Microprobe analysis revealed that a chloride anion had been included instead of a fluoride anion, with 0.8 Cl atom for 12 S atoms, i.e., slightly less than one Cl - for two EDT-TTF-CONHMe molecules. These Cl - anions most probably originate from the decomposition of the chlorinated solvent, as already reported by Shibaeva et al, Day et al, and Mori et al upon electrocrystallization of BEDT-TTF salts. In a control experiment, electrocrystallization of BEDT-TTF carried out in similar conditions yielded high-quality single crystals of (BEDT-TTF) 3 Cl 2 ·H 2 O, whose crystal structure and the occurrence of a metal-to-insulator transition at 100 K, unambiguously demonstrate that this phase is identical to that described earlier. , The fluoride anions introduced with n -Bu 4 NF supported on silica gel then appear to strongly activate the chlorinated solvents, affording an efficient, low-concentration chloride anion source in electrocrystallization experiments.…”

Molecular conductors with the common and robust building block (BEDT-TTF)2NP (NP = [FeNO(CN)5]2–) but different band filling

“…H 2 O 27-29 and b0-(BEDT-TTF) 3 Cl 2 ?2H 2 O. [30][31][32][33] They all have the same stoichiometry and type of radical cation layers. The three salts are quasi-two-dimensional organic metals; the first two are stable down to low temperatures and the third undergoes a metal-insulator transition at 100 K. However, the latter exhibits superconductivity with T c y 2 K and y5 K under pressures of 16 kbar and 12 kbar, respectively.…”

“…It was shown that these salts are isostructural and stable organic metals down to helium temperatures. [1][2][3] Their structures are characterized by radical cation layers of the b0-type alternating with layers of the complex anion [A + (NP 22 ) 2 ] 32 . The NP anion is in a general position and ordered so that the NO ligand is unambiguously distinguished from the CN ligands.…”

Structure of the organic conductor (BEDT-TTF)2Br.C2H4(OH)2

“…'S contacts in the range 3.448 (4)-3.508 (4)/~ for molecule A and 3.448 (4)-3.496 (5)/~ for molecule B. Analogous contacts in the salts (BEDT-TTF)3Br2. (H20)3 (Urayama et al, 1987) and (BEDT-TTF)nCI>4H20 (Shibaeva et al, 1988) are in the range 3.376-3.655 and 3.453-3.549/~, respectively.…”

“…(H20)2 which is a superconductor at Tc = 2 K and pressure of Pc = 16 kbar (Moil & Inokuchi, 1987a,b). It has been shown (Shibaeva, Lobkovskaya, Rozenberg, Buravov, Ignatiev, Kushch, Laukhina, Makova, Yagubskii & Zvarykina, 1988) that changing the C:A ratio to 2:1 in the (BEDT-TTF)4C1E.4H20 salt brings TMI down to 20 K. In order to obtain compounds with monohaloid anions …”