Crystal chemistry of KCuMn3(VO4)3 in the context of detailed systematics of the alluaudite familyстатья
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Дата последнего поиска статьи во внешних источниках: 26 сентября 2016 г.
Аннотация:The crystal structure of new manganese potassium copper vanadate KCuMn3(VO4)3, which was
prepared by the hydrothermal synthesis in the K2CO3–CuO–MnCl2–V2O5–H2O system, was studied by X-ray diffraction (R = 0.0355): a = 12.396(1) Å, b = 12.944(1) Å, c = 6.9786(5) Å, β = 112.723(1)grad, sp.gr.C2/c, Z = 4, ρcalc = 3.938 g/cm3. A comparative analysis of the crystal chemical features of the new representative of the alluaudite family and related structures of minerals and synthetic phosphates, arsenates, and vanadates of the general formula A(1)A(1)'A(1)''A(2)A(2)'M(1)M(2)2(TO4)3(where A are sites in the channels trahedra) was performed. A classification of these ding to the occupancy of A sites is suggested.