Synthesis, Reactions, and Selected Physico-Chemical Properties of 1,3-and 1,2-Tetrachalcogenafulvalenes

Giant Analogues of Tetrathiafulvalene : Outcome and Prospect

“…The latter can alternatively be used as a starting material in the dithiole chemistry ( [13,14] using standard procedures, i.e : -access to the free dialdehyde 7 by formic acidolysis, -quantitative ketal conversion to 8 of the free aldehyde functionality of 6, -for each of these thiones, quantitative C=S to C=O conversion using the classical mercuric acetate procedure 6',7',8'.…”

Synthesis and Characterization of the First Double-Bridged Tetraselenafulvalenophanes

“…[2] An emerging field of application concerns their use as electrophilic spacers in molecular selfassembly. Whereas a great number of self-assembled coordination macromolecules have been obtained by linking metallic centers with polyfunctional Lewis bases, [3] the use of organometallic polyfunctional Lewis acids as linker unit between nucleophiles has been only scarcely examined.…”

“…Dropwise addition of H 2 O (5 mL) and filtration initiated the precipitation of brown-green crystals of 4 within 5 h; yield 0.31 g (52 %). The radical complexes [2] . , [3] .…”

“…[2] One of the basic modifications is dimerization of TTF, which makes it possible to prepare charge-transfer complexes of given stoichiometry. [3] To date, a variety of dimeric TTFs have been thus synthesized and characterized.…”

Organic Charge-transfer Salts and the Component Molecules in Organic Transistors

“…17 Although the crystal has a herringbone structure, 18 the dihedral angle (130°) is much larger than the usual herringbone structures (typically 50°), so these should be 19 It has been, however, reported that the thin-film structures are somewhat different from the single-crystal structure. 20 Although TTF is a strong electron donor with a small ionization potential (4.8 eV), 21,22 DB-TTF is a relatively weak electron donor whose energy level (5.1 eV) is even lower than that of pentacene (4.9 eV). 23 Usually low energy level is advantageous in device stability, but DB-TTF transistors are not particularly stable.…”