Figure 2
(a) A structure map showing the dependence of the formula volumes V/Z on the Shannon (1976) radii of AII cations of coordination number 6, and the distribution of the space groups of known LiAIIBIIIF6 structures. (b) A structure map showing the dependence of the formula volumes V/Z on the calculated radii of AII cations of varied coordination number (as shown in Table 1), and the distribution of the space groups. |