Open AccessSynthesis, structure, Raman, and ESR characterization of a new organic charge transfer salt, (BEDT-TTF){sub 2}[N(SO{sub 2}CF{sub 3}){sub 2}]
Author(s) -
H.H. Wang,
U. Geiser,
M. E. Kelley
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/212529
Subject(s) - angstrom , raman spectroscopy , crystallography , chemistry , molecule , degree (music) , x ray crystallography , charge (physics) , bar (unit) , space group , physics , diffraction , optics , organic chemistry , quantum mechanics , meteorology , acoustics
The new charge transfer salt (BEDT-TTF){sub 2}[N(SO{sub 2}CF{sub 3}){sub 2}] was synthesized and structurally characterized. Its unit cell parameters at 295 K are: a = 6.6394(13) {angstrom}, b = 8.658(2) {angstrom}, c = 17.349(4) {angstrom}, {alpha} = 94.70(2){degree}, {beta} = 97.21(2){degree}, {gamma} = 68.95(2){degree}, V = 922.7(4) {angstrom}{sup 3}, space group P{bar 1}, and Z = 1. The anion, N(SO{sub 2}CF{sub 3}){sub 2}{sup {minus}}, was found to be disordered, which may relate to the absence of the {nu}{sub 4} and {nu}{sub 5} A{sub g} modes of the BEDT-TTF molecule in the Raman spectrum. ESR measurements reveal its semiconductive behavior with a small energy gap of 18.7 meV