Die Kristallstruktur des Rubidiumtrimolybdatosulfats Rb2SMo3O13 / The Structure of the Rubidiumtrimolybdatosulfate Rb2SMo3O13
2014
Fuchs, Joachim | Kreusler, Hans-Ulrich | Förster, Achim
By acidification of an aqueous solution of Rb₂MoO₄ with sulfuric acid the rubidium trimolybdatosulfate Rb₂SMo₃O₁₃ · 0.72 H₂O is formed. A compound with the same composition and evidently the same structure but free of crystal water is obtainable by melting a mixture of Rb₂SO₄ and MoO₃ in molar ratios 1:3. The X-ray structure investigation shows the anion to be built up from double chains of MoO₆ octahedra. Always three neighbouring octahedra are linked about common vertices with one SO₄ tetrahedron. The tetrahedra are alternating above and below the double chain. - Rb₂SMo₃O₁₃ is the first known macromolecular heteropolymolybdate.
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