Wolff, Klaus K. and Pfitzner, Arno and Schleid, Thomas (2024) On the Rubidium Thiotellurate(IV) Rb₂[TeS₃] and its Tritohydrate Rb₂[TeS₃] ⋅ ¹/₃ H₂O. ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 650 (20). ISSN 0044-2313, 1521-3749
Full text not available from this repository. (Request a copy)Abstract
Rb-2[TeS3] and Rb-2[TeS3] & sdot; (1)/(3) H2O were obtained from rubidium azide (RbN3), tellurium and sulfur in 2 : 1 : 3 molar ratios from evacuated fused silica ampoules at 500 degrees C under more or less anhydrous conditions. Both compounds crystallize orthorhombically in the space group P2(1)2(1)2(1) (Rb-2[TeS3]: a=873.42(6) pm, b=1316.73(9) pm, c=2064.59(14) pm; Rb-2[TeS3] & sdot; (1)/(3) H2O: a=872.97(6) pm, b=1299.82(9) pm, c=2148.26(15) pm, both at -173 degrees C for Z =12) and contain discrete psi(1)-tetrahedral [TeS3](2-) anions (d(Te-S)=232-236 pm) in layerwise arrangements. The difference results from the water of hydration in Rb-2[TeS3] & sdot; (1)/(3) H2O, which increases the coordination numbers of half of the six crystallographically distinct Rb+ cations from six and seven (only sulfur) to seven and almost eight by providing with oxygen from H2O an extra ligand (d(Rb-O)=290-318 pm). Red Rb-2[TeS3] transforms pseudo-topotactically into yellow Rb-2[TeS3] & sdot; (1)/(3) H2O immediately upon contact with moist atmosphere. Both compounds were screened with X-ray diffraction, Raman and diffuse reflectance spectroscopy as well as thermal analysis.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Rubidium salts; Thiotellurates(IV); Hydrates; Crystal structures; Raman spectra |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Dec 2025 07:31 |
| Last Modified: | 16 Dec 2025 07:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64660 |
Actions (login required)
 |
View Item |
