65220-65-7Relevant academic research and scientific papers
NEW CONDUCTING SALTS CONTAINING UNSYMMETRICAL ?-DONORS
Giral, L.,Fabre, J. M.,Gouasmia, A.
, p. 4315 - 4318 (1986)
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.
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.
