Back to Search
Start Over
Mg2Pb2Si2O7F2: a new lead-containing alkali earth metal silicate fluoride with a short cutoff edge.
- Source :
- New Journal of Chemistry; 10/7/2023, Vol. 47 Issue 37, p17413-17419, 7p
- Publication Year :
- 2023
-
Abstract
- A new silicate fluoride, Mg<subscript>2</subscript>Pb<subscript>2</subscript>Si<subscript>2</subscript>O<subscript>7</subscript>F<subscript>2</subscript>, has been successfully synthesized using a high-temperature solution method. It crystallizes in the orthorhombic space group Pbcn (No. 60). Mg<subscript>2</subscript>Pb<subscript>2</subscript>Si<subscript>2</subscript>O<subscript>7</subscript>F<subscript>2</subscript> is the first lead-containing alkali earth metal silicate fluoride. The optical characterization indicates that Mg<subscript>2</subscript>Pb<subscript>2</subscript>Si<subscript>2</subscript>O<subscript>7</subscript>F<subscript>2</subscript> possesses a wide transparent window. To confirm the coordination environment of Si and its thermostability, infrared spectra and thermal behaviors were also analyzed. First-principles calculations were also implemented for a better understanding of the relationship between the structure of Mg<subscript>2</subscript>Pb<subscript>2</subscript>Si<subscript>2</subscript>O<subscript>7</subscript>F<subscript>2</subscript> and its properties. Additionally, to further explore the structural novelty of Mg<subscript>2</subscript>Pb<subscript>2</subscript>Si<subscript>2</subscript>O<subscript>7</subscript>F<subscript>2</subscript>, its structure is compared with anionic structures of silicate fluorides with alkali metals, alkaline earth metals or lone pair metal cations. Interestingly, the results indicate that the isolated [Si<subscript>2</subscript>O<subscript>7</subscript>] dimer is rare among the above systems, which enriches the structural chemistry of silicate fluorides. [ABSTRACT FROM AUTHOR]
- Subjects :
- ALKALI metals
ALKALINE earth metals
FLUORIDES
SILICATES
SPACE groups
INFRARED spectra
Subjects
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 47
- Issue :
- 37
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 173860859
- Full Text :
- https://doi.org/10.1039/d3nj03141a