Sodium-manganese cyclopentaphosphate: Synthesis and crystal structureстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The Na2MnP5O15 compound containing a cyclopentaphosphate anion was obtained for the first time by the direct synthesis from the melt of polyphosphoric acids in the presence of Na+ and Mn4+ ions. The parameters of the monoclinic unit cell are a = 5.176, b = 13.541, and c = 8.771 Angstrom; beta = 103.61 degrees; sp, gr, P2(1)/m, and Z = 2. The cyclopentaphosphate anions and the manganese atoms in the structure are octahedrally coordinated with oxygen atoms and are linked into layers. Sodium anions crosslink the neighboring layers into a three-dimensional framework. (C) 2000 MAIK "Nauka/Interperiodica".