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- W1978686912 abstract "X-ray diffraction studies were made for SbCl5, SbCl4F, SbCl2F3 and SbF5 graphite intercalation compounds of stages 1, 2 and 3. The (001) reflex intensities were analyzed in terms of a centrosymmetric structural model showing periodic layer stacking, with chlorine layers contacting antimony as well as carbon layers. The results are in agreement with the structural model recently found in other metal halide graphites. Contrary to the classical model, a displacement (about 0.35 Ā) of the Sb atoms from the mirror plane in the centre of the intercalant layer was found. Thus in projection onto the c-axis different distances between antimony and halogen atoms result. The analyses of different stages of one compound lead to similar layer parameters. The positions of the five halogen atoms in each compound were refined using a unique z-coordinate. However, it seems reasonable that the halogen atoms are arranged in different z-coordinates. In case of dilute SbCl5 graphites prepared in CCl4 solution, the identity period along c-axis Ic increases with SbCl5 concentration in the stage 2 compound. X-ray analysis reveals that Sb atoms move towards the mirror plane, when the SbCl5 concentration increases. In agreement to Moessbauer studies it has to be assumed that the gallery is filled by SbX5 trigonal bipyramids, and the molecular axis is tilted with respect to the c-axis. The shifting of molecules towards the centre maybe due to the fact that polymeres linked by halogen bridges are formed." @default.
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- W1978686912 date "1985-08-01" @default.
- W1978686912 modified "2023-09-23" @default.
- W1978686912 title "Structural studies of graphite intercalation compounds of antimony chloridefluorides using (001) x-ray reflexions" @default.
- W1978686912 doi "https://doi.org/10.1016/s0022-1139(00)83439-9" @default.
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