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- W1987672732 abstract "H0.5Nb2O11.25S2, trigonal, R3 (no. 148), a = 10.378(2) A, c = 26.540(5) A, V = 2475.7 A 3 , Z = 24, Rgt(F) = 0.031, wRref(F 2 ) = 0.072, T = 295 K. Source of material Single crystals of the title compound were obtained by evaporation of a solution of niobium oxide in sulfuric acid. Typically, 1.000 g (3.762 mmol) Nb2O5 (Chempur, 99.9 %) and 100 ml H2SO4 (95 % – 97 %, Merck, p.a.) were mixed and heated at 523 K while stirring. When the niobium oxide was completely dissolved, the colourless solution was kept at 523 K to allow the acid to evaporate until it turned slightly yellowish and first signs ofprecipitationweregivenbyturbidity.Thishighlyconcentrated" @default.
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- W1987672732 date "2004-04-01" @default.
- W1987672732 modified "2023-09-25" @default.
- W1987672732 title "Refinement of the crystal structure of diniobium trisoxydisulfate hydrate, Nb2O3(SO4)2 · 0.25 H2O" @default.
- W1987672732 doi "https://doi.org/10.1524/ncrs.2004.219.14.99" @default.
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