SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF A SELENOPHENOQUINONOID-EXTENDED DONOR, BEDT-BDTS, AFFORDING HIGHLY CONDUCTING TETRACYANOQUINODIMETHANE AND I-3 COMPLEXES
K. Takahashi et al., SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF A SELENOPHENOQUINONOID-EXTENDED DONOR, BEDT-BDTS, AFFORDING HIGHLY CONDUCTING TETRACYANOQUINODIMETHANE AND I-3 COMPLEXES, Journal of materials chemistry, 8(2), 1998, pp. 7-11
ithio-1,3-dithiol-2-yliden)-2,5-dihydroselenophene (BEDT-BDTS), a sele
nophenoquinonoid-extended analogue of bis(ethylenedithio) tetrathiaful
valenes (BEDT-TTF), has been synthesized as a promising candidate for
an electron-donating component of high T-c ,organic superconductors. B
EDT-BDTS is air-stable and has a significantly enhanced electron-donat
ing ability compared with that of BEDT-TTF. The molecular and crystal
structures of BEDT-BDTS have been determined by single crystal X-ray a
nalysis in which short intermolecular: S ... S contacts have been foun
d in the side-by-side directions of the donor arrangements. A 1:1 TCNQ
complex and a 3:1 I,(-)(3) radical cation salt of BEDT-BDTS have been
obtained and proved to exhibit fairly high room temperature conductiv
ities.