Thioaluminogermanate M(AlS2)(GeS2)4 (M = Na, Ag, Cu): Synthesis, Crystal Structures, Characterization, Ion-Exchange and Solid-State 27Al and 23Na NMR Spectroscopy
KAUST DepartmentChemical Science Program
Imaging and Characterization Core Lab
Physical Sciences and Engineering (PSE) Division
KAUST Grant NumberBAS/1/1302-01-01
Permanent link to this recordhttp://hdl.handle.net/10754/627415
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AbstractThe new thioaluminogermanate Na(AlS2)(GeS2)4 (1) was successfully synthesized by a direct combination reaction. The compound crystallizes in the monoclinic space group P21/n (no. 14) with unit cell parameters a = 6.803(3) Å, b = 38.207(2) Å, c = 6.947(4) Å, and β = 119.17(3)°. The crystal structure is composed of a [(AlS2)(GeS2)4]− 3D polyanionic network, in which Al and Ge atoms share the atomic positions and Na cations occupy the channels and voids formed by the connection of (Ge/Al)S4 tetrahedra. The title compound shows a cation-exchange property with monovalent Ag+ and Cu+ ions at room temperature in solvent media, resulting in the formation of the isostructural compounds Ag(AlS2)(GeS2)4 (2) and Cu(AlS2)(GeS2)4 (3), respectively. The ion-exchange products Ag(AlS2)(GeS2)4 (2) and Cu(AlS2)(GeS2)4 (3) show higher air stability and narrower bandgap energies compared to those of the parent compound Na(AlS2)(GeS2)4 (1).
CitationAlahmari F, Davaasuren B, Emwas A-H, Rothenberger A (2018) Thioaluminogermanate M(AlS2)(GeS2)4 (M = Na, Ag, Cu): Synthesis, Crystal Structures, Characterization, Ion-Exchange and Solid-State 27Al and 23Na NMR Spectroscopy. Inorganic Chemistry 57: 3713–3719. Available: http://dx.doi.org/10.1021/acs.inorgchem.7b02980.
SponsorsThis work was supported by the King Abdullah University of Science and Technology (KAUST) baseline fund BAS/1/1302-01-01.
PublisherAmerican Chemical Society (ACS)