Sn6SiO8, a Tin(II) Silicate with a Zinc Blende Related Structure and High Thermal Stability

Daniel S Parsons; Savvaki N Savva; Wai Chi Tang; Andrew Ingram; Joseph A Hriljac

doi:10.1021/acs.inorgchem.9b02615

Sn₆SiO₈, a Tin(II) Silicate with a Zinc Blende Related Structure and High Thermal Stability

Inorg Chem. 2019 Dec 16;58(24):16313-16316. doi: 10.1021/acs.inorgchem.9b02615. Epub 2019 Dec 5.

Authors

Daniel S Parsons, Savvaki N Savva, Wai Chi Tang, Andrew Ingram, Joseph A Hriljac¹

Affiliation

¹ Diamond Light Source Ltd. , Harwell Science and Innovation Campus, Didcot , Oxfordshire OX11 0DE , U.K.

PMID: 31804067
DOI: 10.1021/acs.inorgchem.9b02615

Abstract

The crystal structure of a novel cubic tin(II) silicate, Sn₆SiO₈ (space group F4̅3m, a = 10.40708(2) Å, and Z = 4), synthesized by microwave-assisted hydrothermal synthesis has been solved by Rietveld refinement of the powder X-ray diffraction (PXRD) data. The structure, analogous to zinc blende, comprises a face-centered-cubic array of [Sn₆O₈]^4- anions, with Si⁴⁺ occupying half of the tetrahedral holes. The tin(II) silicate has been further characterized by variable-temperature PXRD, demonstrating stability of the structure and resistance to Sn^II oxidation up to ∼600 °C, when the compound begins to thermally decompose.