Physics and Chemistry of Spatially Resolved Microdomains in SbCl5-Intercalated Graphite

Abstract

We report on the first spatially resolved study of the chemical and electronic properties of microdomains in molecular monolayers. Analytical electron-microscope measurements of stage-4 SbCls-intercalated graphite show Sb-rich islands of lateral dimension 500-1000 A. Energy-loss spectra yield a 6-eV graphite IT plasmon modulated by the domain structure, but the 25-eV IT + cr plasmon and the carbon core excitations are spatially invariant. The derived island and background compositions are (SbCl 3 ) 1 / 8 (SbCl 4~) i/32 and (SbCl 5 )9/ 16 (SbCl^) 9 /32.

c-axis resistivity of graphite intercalation compounds

“…They have estimated the value of s from the (00L) x-ray intensities under the assumption that there are only two molecular species (SbCl 3 and SbCl − 6 ) in the intercalate layers. Their values of s may be overestimated because of neglecting the possibility of SbCl − 4 and SbCl 5 species confirmed by Mössbauer [19,20] and STEM [16]. for each stage number are listed in table 1.…”

“…The incomplete disproportionation occurring in the intercalate layers during the intercalation process gives rise to molecular species of SbCl 3 , SbCl − 4 , SbCl 5 , and SbCl − 6 [15][16][17][18][19][20]. The SbCl − 6 species forms a commensurate structure of ( density (s = 12) and the structure of pristine SbCl 3 [26].…”

“…We will also show a pronounced thermal hysteresis of ρ c for SbCl 5 GICs with 3 n 9 in the temperature range between 180 and 240 K. This strong hysteresis character in ρ c against T is discussed in association with enhanced fluctuation due to electric dipole moments of SbCl 3 occurring in the intercalate layers of SbCl 5 GICs. The in-plane structure of SbCl 5 GICs is complicated by the incomplete disproportionation during the intercalation process [15][16][17][18][19][20]. Mössbauer studies [19,20] and scanning transmission electron microprobe (STEM) [16] have clearly shown that there are SbCl 3 , SbCl − 4 , SbCl 5 , and SbCl − 6 molecular species in SbCl 5 GICs.…”

“…The in-plane structure of SbCl 5 GICs is complicated by the incomplete disproportionation during the intercalation process [15][16][17][18][19][20]. Mössbauer studies [19,20] and scanning transmission electron microprobe (STEM) [16] have clearly shown that there are SbCl 3 , SbCl − 4 , SbCl 5 , and SbCl − 6 molecular species in SbCl 5 GICs. The SbCl − 6 molecule is formed of a (…”

Superstructure and boundary structure in stage 4 MoCl5–graphite intercalation compounds studied by atomic force microscopy and scanning tunneling microscopy

“…1 However, there are still many points in their detailed structure remaining to be clarified, probably because crystallographic techniques require high quality crystals, but intercalation reactions introduce some defects and often result in thermally and chemically unstable compounds. 4,5 Domains with a diameter between 10 and 20 nm have also been studied on transition metal dichlorides-GIC's such as CuCl 2 -GIC's 6 and MnCl 2 -GIC's. In order to explain the anomalous change of stage from stage 2 to stage 3 during de-intercalation, the Daumas-Hérold model was proposed.…”