Oxydation intermetallischer Phasen: Na5InO4 aus Naln und Na2O2

Oxidation of Intermetallic Phases: Na₅InO₄ from NaIn and Na₂O₂ By oxidation of NaIn with Na₂O₂ [sealed Ag-cylinder 430°C, 1 d] Na₅InO₄ is formed as light yellow, coarse single crystals. The lattice constants of the orthorhombic cell are: According single crystal data [Pbca; four-circle diffractometer PW 1100, 1 748 out of 1 769 I₀(hkl); R = 6.3% and R_w = 4.5%] Na₅InO₄ is isotypic with α-Li₅GaO₄. The Madelung Part of Lattice Energie, MAPLE, the Mean Fictiv Ionic Radii, MEFIR, and the Effectiv Coordination Numbers, ECoN, are calculated.