THE 1ST OXOMANGANATE(V) WITH CHAINS CONSISTING OF 6 AND 8 MEMBERED RINGS - NA10(LI2[MNO4]4)

By heating of well ground mixtures of the oxides [Na2O2 and LiMnO4, Na:Mn = 2.8:1, Ag-tube, 580-degrees-C, 30 d] blue-green, orthorhombic single crystals of Na10{Li2[MnO4]4} have been prepared the first time. The structure determination (four circle diffractometer, MoK-alphaBAR, 2450 of 2469 I(o)(hkl), R = 8.6%, R(w) = 3.6%) confirms the space group Pnma (No. 62); a = 1048,1(7), b = 1518.4(9), c = 1044.4(6) pm. Essential part of the structure are hitherto unknown connections of [MnO4] and [LiO4] groups to linear chains, which consist of six- and eight-membered rings out of O-Li-O-Mn-O. The structure is described via Schlegel diagrams. The Madelung Part of Lattice Energy. MAPLE, the Effective Coordination Numbers, ECoN, and the charge distribution have been calculated and discussed.