Die Kristallstruktur von Cs2NaInF6

Using single crystal data the occurence of the K₂NaCrF₆ type of structure for Cs₂NaInF₆ (a = 8.905 Å) has been confirmed and x_F determined to be x_F = 0.229; in consequence: In–F = 2.03₉ Å 430 (hkl) with h + k = 2n and h = 0 to 7; R = 11.1%; Mo? K_α.]. The Madelung Part of Lattice Energy is calculated and discussed in detail.