Zur Kristallstruktur von Li8PbO6 [1]

On the Structure of Li₈PbO₆ For the first time single crystals of Li₈PbO₆ have been prepared by heating of mixtures of Na₂PbO₃ and Li₂O Ag-cylinders, 650°C, 150 d]. The structure 382 I₀(hkl), four circle diffractometer PW 1100, ω/2Θ-scan, MoKα, R = 3.07%, R_w = 3.00%, space group R3 ; a = 555.09(4), c = 1564.13(17) pm, D_x = 4.28 g · cm^?3, D_pyk = 4.24 g · cm^?3, Z = 3] is characterized by the motive of a hexagonal-closed O^2? packing. Half of the octahedral sites are occupied by Pb⁴⁺ and Li⁺ and half of the tetrahedral sites only by Li⁺. The Madelung Part of Lattice Energy, MAPLE, and the Effective Coordination Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, are calculated.