35079-58-4Relevant academic research and scientific papers
Synthesis of unsimmetrically substituted tetrathiafulvalenes by the "ylid route". Investigations of selectivity.
Fabre, J. M.,Giral, L.,Gouasmia, A.,Cristau, H. J.,Ribeill, Y.
, p. 823 - 826 (2007/10/02)
The selective synthesis of unsimmetrically substituted tetrathiafulvalenes 1 (R R') using phosphonium ylids 2 and dithiolium salts 3 in THF at -80 deg C has been investigated.Several unsymmetrical tetrathiafulvalenes were obtained in good yield. R,R'=CH3; (CH2)4; o-C6H4.It was also shown that the instability of the phosphonium ylid 2 and dithiolylium 3 under the rreaction conditions leads to the formation of variable amounts of symmetrical terathiafulvalenes 1 (R = R').Therefore, purification of the mixture by column chromatography with CS2 as eluent was necessary.
NEW CONDUCTING SALTS CONTAINING UNSYMMETRICAL ?-DONORS
Giral, L.,Fabre, J. M.,Gouasmia, A.
, p. 4315 - 4318 (2007/10/02)
This communication describes the synthesis and the electrochemical properties of a new type of donor containing sulfur or selenium atoms: the dimethyltetramethylenetetraselenafulvalene 1 and the dimethyltetramethylenetetrathiafulvalene 2.The electrical conductivity of their charge transfer complexes and of some of their radical cation salts are reported.
Tetrathiafulvalenes. XXI Syntheses of Tetrathiafulvalenes from 2-Alkylthio-, 2-Arylthio- and 2-Alkylseleno-1,3-dithiolium Salts
Fanghaenel, E.,Richter, A. M.,Schukat, G.
, p. 479 - 484 (2007/10/02)
In the reaction of 2-alkylthio-, 2-arylthio- or 2-alkylseleno-1,3-dithiolium salts with trivalent phosphorus compounds in acetonitril tetrathiafulvalenes 2 are formed.As an intermediate we suppose a phosphorane, which reacts with further 1,3-dithiolium sa
