Charkin, Dmitri O. and Karpov, Andrey S. and Kazakov, Sergey M. and Plokhikh, Igor and Zadoya, Anastasiya and Kuznetsov, Alexey N. and Maslakov, Konstantin and Teterin, Anton Yu and Teterin, Yury A. and Zaloga, Alexander N. and Siidra, Oleg (2019) Synthesis, crystal structure, spectroscopic properties, and thermal behavior of rare-earth oxide selenates, Ln(2)O(2)SeO(4) (Ln = La, Pr, Nd): The new perspectives of solid-state double-exchange synthesis. JOURNAL OF SOLID STATE CHEMISTRY, 277. pp. 163-168. ISSN 0022-4596, 1095-726X
Full text not available from this repository. (Request a copy)Abstract
Three rare-earth oxide selenates Ln(2)O(2)SeO(4) (Ln = La, Pr, Nd) have been prepared via double-exchange solid-state reactions between respective LnOCl oxyhalides and potassium selenate. This approach succeeded to obtain singlephase specimens of La2O2SeO4 and Nd2O2SeO4, previously known as transients upon thermal decomposition of the corresponding selenates, as well as a new compound Pr2O2SeO4. Refinement of their crystal structures from powder X-ray diffraction data confirmed previous attributions to the grandreefite (Pb2F2SO4) structure type observed also for the Ln(2)O(2)SO(4) oxide sulfates. According to polythermic X-ray studies, La2O2SeO4 is stable until at least 700 degrees C. All compounds were characterized by infrared and X-ray photoelectron spectroscopy.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DECOMPOSITION; Double-exchange solid state reactions; Rare-earth compounds; Selenates; Crystal structure |
| 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: | 31 Mar 2020 06:51 |
| Last Modified: | 31 Mar 2020 06:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26375 |
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