Über Oxoplumbate(IV).IDie Kristallstruktur von Rb2PbO3

Rb₂PbO₃ [single crystals, 244 (hkl)] crystallises orthorhombic [D? Pmcn] with a = 10.8, b = 7.49, c = 5.98 Å [Z = 4, d_pyk = 5.69, d_rö = 5.80 g · cm^?3], Rb in 8(d) Pb in 4 (c), O_I in 4 (c). The parameters are shown in table 2. The MADELUNG Part of Lattice Energy of Rb₂RBO₃ and structurally related models are calculated and discussed in detail. Characteristic for the structure are ldimensional chains consisting of alternatingly directed pseudo-tetragonal pyramids, ∞¹[PbO₁O_4/2], connected via common basis edges.