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Mild solvothermal syntheses and crystal structures of two quaternary hetero-transition metal sulfides RbAg5HgS4 and CsAgHgS2.
- Source :
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Journal of Solid State Chemistry . Feb2023, Vol. 318, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
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Abstract
- Two quaternary hetero-transition metal sulfides RbAg 5 HgS 4 (1) and CsAgHgS 2 (2) have been successfully synthesized under mild solvothermal method in the presence of thiophenol as a mineralizer. Compound 1 features an interesting 3-D [Ag 5 HgS 4 ]- framework composed of 16-membered ring [Ag (2) 4 M(1) 4 S 8 ] (M = Ag/Hg) and quasi-8-membered ring [Ag (2) 4 S 4 ] which are all constructed by MS 2 and AgS 2 linear units. Compound 2 possesses anionic [AgHgS 2 ] n n− layers formed with MS 4 (M = Ag/Hg) tetrahedra, in which Ag+ and Hg2+ ions occupy the same crystallographic site. Particularly, this is the first time that quaternary A-Ag-Hg-S (A = alkali metal) system were explored via solvothermal method, which demonstrates that structural directing agents have significant influence on the structures of hetero-transition metal sulfides. Furthermore, the XRD experiment and band gap value of compound 2 were also investigated. Two quaternary hetero-transition metal sulfides RbAg 5 HgS 4 (1) and CsAgHgS 2 (2) have been successfully synthesized under mild solvothermal method in the presence of thiophenol as a mineralizer. Compound 1 features an interesting 3-D [Ag 5 HgS 4 ]- framework composed of 16-membered ring [Ag (2) 4 M(1) 4 S 8 ] (M = Ag/Hg) and quasi-8-membered ring [Ag (2) 4 S 4 ] which are all constructed by MS 2 and AgS 2 linear units. Compound 2 possesses anionic [AgHgS 2 ] n n− layers formed with MS 4 (M = Ag/Hg) tetrahedra, in which Ag+ and Hg2+ ions occupy the same crystallographic site. [Display omitted] • Two hetero-transition metal sulfides RbAg 5 HgS 4 (1) and CsAgHgS 2 (2) were synthesized solvothermally using thiophenol as a mineralizer. • Compound 1 features a 3-D [Ag 5 HgS 4 ]- framework composed of 16-membered ring [Ag (2) 4 M(1) 4 S 8 ] (M = Ag/Hg) and quasi-8-membered ring [Ag (2) 4 S 4 ]. • Compound 2 possesses anionic [AgHgS 2 ] n n− layers formed with MS 4 (M = Ag/Hg) tetrahedra. • The completely different structures of the two sulfides are due to the usage of different structural directing agents. [ABSTRACT FROM AUTHOR]
- Subjects :
- *METAL sulfides
*QUATERNARY structure
*CRYSTAL structure
*BAND gaps
*THIOPHENOL
Subjects
Details
- Language :
- English
- ISSN :
- 00224596
- Volume :
- 318
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 160963407
- Full Text :
- https://doi.org/10.1016/j.jssc.2022.123716