SYNTHESIS, CRYSTAL STRUCTURE, AND TOPOLOGY OF THE K4Sn2(Si6O18)⋅2H2O NEW MICROPOROUS STANOSILICATE WITH KOSTYLEVITE STRUCTURAL TYPE

Yamnova, N.A.; Volkov, S.N.; Gurbanova, O.A.; Volkov, A.S.; Dimitrova, O.V.; Deyneko, D.V.; Vaitieva, Y.A.; Aksenov, S.M.

Авторы: Yamnova N.A., Volkov S.N., Gurbanova O.A., Volkov A.S., Dimitrova O.V., Deyneko D.V., Vaitieva Y.A., Aksenov S.M.
Журнал: Journal of Structural Chemistry
Том: 64
Номер: 9
Год издания: 2023
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 1571
Последняя страница: 1581
Номер статьи: 115285
DOI: 10.1134/S0022476623090019
Аннотация: Single crystals of a new synthetic K4Sn2(Si6O18)⋅2H2O stannosilicate are prepared by the intermediatetemperaturehydrothermal synthesis in the K2CO3:SnO2:SiO2 system using the 2:1:2 weight ratio ofcomponents. The experiments are carried out for 14 days in standard steel autoclaves at T = 553 K andP = 7 MPa. The crystal structure is studied by the X-ray diffraction analysis. Monoclinic unit cellparameters: a = 6.4605(3) A, b = 11.6357(5) A, c = 12.9162(6) A, β = 103.893(5)°; V = 942.54(8) A3;space group P21/n. The new compound is isostructural to the K4Zr2(Si6O18)⋅2H2O kostylevite mineral andrelated synthetic compounds, in particular, the AV-7 material with the K3NaSn2(Si6O18)⋅2H2O composition.The crystal structure of the studied stannosilicate is formed by a heteropolyhedral framework characterizedby the presence of a system of wide parallel channels arranged along the [100] direction. The newstannosilicate is the first representative of kostylevite-like compounds whose channels are filled only bypotassium cations.DOI: 10.1134/S0022476623090019
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SYNTHESIS, CRYSTAL STRUCTURE, AND TOPOLOGY OF THE K4Sn2(Si6O18)⋅2H2O NEW MICROPOROUS STANOSILICATE WITH KOSTYLEVITE STRUCTURAL TYPEстатья

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