Crystal Structure of a Non-Conductive Non-Stoichiometric Tetrathiafulvalenium Salt: (TTF)₃(BF₄)₂

STRUCTURE AND PROPERTIES OF M(dmit) 2 SALTS WITH Me 3 N + -TEMPO OR TTF-(HO)TEMPO

“…EPR spectra in CH 3 CN solution shows the superposition of two triplets with a N ¼ 15 G and 8 G which indicates TTF-(HO)TEMPO and TTF þ -(HO)TEMPO, respectively. Similar feature was also observed in the crystal structure of (TTF) 3 (BF 4 ) 2 [12]. Slow diffusion of (TTF-(HO)-TEMPO) 3 powder conductivity of 4 Â 10 À2 S cm À1 .…”

(TTF)Pb2I5: A Radical Cation-Stabilized Hybrid Lead Iodide with Synergistic Optoelectronic Signatures

“…al 23,24 were the main sources used for interpreting the presented spectra. The insulating TTF salt, (TTF) 3 (BF 4 ) 2 25 We observe noticeable absorptions for this salt near 0.6 eV which are attributed to intermolecular charge transfer from TTF 0 to TTF +• , as well as an absorption attributed to an intramolecular transition for a lone TTF +• within a dimer at 3.18 eV. 22,24 The weak peaks at 1.5 eV and 2.3 eV are an intradimer transition and an intramolecular TTF +• transition, respectively.…”

Synthesis, crystal structure, conductivity and magnetic properties of trifluoromethylated dinuclear copper(II) complexes with tetracyanoquinodimethane

“…The synthesis of several compounds exhibiting stacking of trimers which share two charges (ϩ or Ϫ) has been achieved and their electronic structures discussed in detail. 30,36- 39 The rule seems to be that in all M 2ϩ (tcnq) 3 2Ϫ systems the tcnq units are not equivalent, therefore even if electrons may in some cases not be strictly localised on a single tcnq, an important asymmetry in the charge distribution is always observed. A refined crystal structure may give the ultimate answer to this question, according to the criteria of Flandrois and Chasseau, 40 based on the bond lengths (b, c, d) of tcnq (see Fig.…”

“…A small amount of trimerisation is known to affect dramatically the conductivity of low-dimensional conductors. 39 As [Cu 2 L 2 ][tcnq] 3 shows no overlap between the (tcnq) 3 units, a conductivity as large as 1.5 × 10 Ϫ4 Ω Ϫ1 cm Ϫ1 is rather surprising, and suggests that some additional path might be found in the material. If so, it would most likely take place through the weak Cu᎐tcnq bond.…”