Figure 4
The dependence of the unit-cell parameter ratio c/a on Z in selected group 1 and thallium(I) rare-earth sulfides (α-NaFeO2 structural type), as well as in the hexagonal structural type (P63/mmc) of the second modification of CsLnS2. The structures are referenced in Table S4
. TlD and TlK represent structure determinations by Duczmal & Pawlak (1994) and Kabré et al. (1974). |