Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
---|---|---|
Page(s) | 577 - 579 | |
DOI | https://doi.org/10.1051/jp4:2004114137 |
J. Phys. IV France 114 (2004) 577
DOI: 10.1051/jp4:2004114137
[BETS]
complex and BETS
salts with square-planar platinate (II), nickelate (II) anions:
(BETS)
4
Pt(CN)
4,
(BETS)
4
Ni(CN)
4
N. Spitsina1, 1, A. Dubrovskii1, L. Buravov1, G. Shilov1, O. Dyachenko1, Y. Okano2 and A. Kobayashi3
1 Institute of Problems of Chemical Physics RAS, 142432 Chernogolovka, MD, Russia
e-mail: spitsina@icp.ac.ru
2 Institute for Molecular Science, Okazaki 444-8585, Japan
e-mail: hayao@ims.ac.jp
3 Research Center for Spectrochemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
e-mail: akiko@chem.s.u-tokyo.ac.jp
Abstract
The (BETS)
C
60 complex (1)
and new radical cation salts based on
bis(ethylenedithio)tetraselenafulvalene (BETS) with the square-planar
[ Ni(CN)
4]
2- , [ Pt(CN)
4]
2- anions were synthesized:
(BETS)
Ni(CN)
4 (2), (BETS)
Pt(CN)
4 (3). The crystal structure of 1 - 3
is layered. The layers consisting of C
60 molecules are alternated with
the layers composed of BETS molecules in 1. The obtained complex is
classified as molecular adduct in which the van der Waals interactions are
predominant. The radical cation layers in the salt 2 are alternated
with the anion layers along the ñ-direction of the unit cell. The salts
retain metallic state down to 4.2 K. The band structure calculation of
2 shows 2-dimensional cylindrical Fermi surface, which is
consistent with the
- type structure and its conductivity.
Key words. Radical cation salts,
bis(ethylenedithio)tetraselenafulvalene, tetracyanonickelate (II) anion,
tetracyanoplatinate (II) anion, fullerene, crystal structure, electronic
band structure calculation.
© EDP Sciences 2004