Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums
A survey is given for the crystallographic and vibrational spectroscopic results of a number of alums. From both types of results (structural and spectroscopic) it is positively known that the sulfate α-alums exhibit orientational disorder of the sulfate anions along the threefold symmetry axis. Bot...
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| Format: | Article |
| Language: | English |
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Society of Chemists and Technologists of Macedonia
2015-06-01
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| Series: | Macedonian Journal of Chemistry and Chemical Engineering |
| Subjects: | |
| Online Access: | https://mjcce.org.mk/index.php/MJCCE/article/view/675 |
| _version_ | 1818926260485619712 |
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| author | Vladimir M. Petruševski |
| author_facet | Vladimir M. Petruševski |
| author_sort | Vladimir M. Petruševski |
| collection | DOAJ |
| description | A survey is given for the crystallographic and vibrational spectroscopic results of a number of alums. From both types of results (structural and spectroscopic) it is positively known that the sulfate α-alums exhibit orientational disorder of the sulfate anions along the threefold symmetry axis. Both IR and Raman spectra confirm the finding for sulfate disorder in KAl(SO4)2·12H2O. Only the Raman spectra show clearly that the sulfate anions in many K, Tl and Rb are indeed disordered, in excellent agreement with the crystallographic results [1]. The disorder depends on the nature and size of MI cations in the structure, the smaller the radius, the larger the disorder. No anion disorder has thus far been detected in selenate alums. The structure prediction of KAl(SeO4)2·12H2O allows the existence of disorder of the selenate groups. The latter seems to be corroborated by the study of the Raman spectra of selenate α alums. It is thus worthwhile to have the crystal structure of KAl(SeO4)2·12H2O refined, in order to check this prediction and as an additional check of the general explanation for the sulfate anion disorder in alums, offered earlier [1]. |
| first_indexed | 2024-12-20T02:54:18Z |
| format | Article |
| id | doaj.art-d1adb955cc8b48ab80ca3128a6fcecd1 |
| institution | Directory Open Access Journal |
| issn | 1857-5552 1857-5625 |
| language | English |
| last_indexed | 2024-12-20T02:54:18Z |
| publishDate | 2015-06-01 |
| publisher | Society of Chemists and Technologists of Macedonia |
| record_format | Article |
| series | Macedonian Journal of Chemistry and Chemical Engineering |
| spelling | doaj.art-d1adb955cc8b48ab80ca3128a6fcecd12022-12-21T19:55:57ZengSociety of Chemists and Technologists of MacedoniaMacedonian Journal of Chemistry and Chemical Engineering1857-55521857-56252015-06-01341738510.20450/mjcce.2015.675261Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alumsVladimir M. Petruševski0Institute of Chemistry Faculty of Natural Sciences and Mathematics Ss. Cyril and Methodius UniversityA survey is given for the crystallographic and vibrational spectroscopic results of a number of alums. From both types of results (structural and spectroscopic) it is positively known that the sulfate α-alums exhibit orientational disorder of the sulfate anions along the threefold symmetry axis. Both IR and Raman spectra confirm the finding for sulfate disorder in KAl(SO4)2·12H2O. Only the Raman spectra show clearly that the sulfate anions in many K, Tl and Rb are indeed disordered, in excellent agreement with the crystallographic results [1]. The disorder depends on the nature and size of MI cations in the structure, the smaller the radius, the larger the disorder. No anion disorder has thus far been detected in selenate alums. The structure prediction of KAl(SeO4)2·12H2O allows the existence of disorder of the selenate groups. The latter seems to be corroborated by the study of the Raman spectra of selenate α alums. It is thus worthwhile to have the crystal structure of KAl(SeO4)2·12H2O refined, in order to check this prediction and as an additional check of the general explanation for the sulfate anion disorder in alums, offered earlier [1].https://mjcce.org.mk/index.php/MJCCE/article/view/675alumscrystal structure, prediction ofvibrational spectrasulfatesselenatesanion disorder |
| spellingShingle | Vladimir M. Petruševski Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums Macedonian Journal of Chemistry and Chemical Engineering alums crystal structure, prediction of vibrational spectra sulfates selenates anion disorder |
| title | Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums |
| title_full | Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums |
| title_fullStr | Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums |
| title_full_unstemmed | Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums |
| title_short | Vibrational spectra of hexaaquacomplexes. XII. On the possible anion disorder in selenate alums: prediction of the crystal structure and vibrational spectra of KAl(SeO4)2·12H2O and related alums |
| title_sort | vibrational spectra of hexaaquacomplexes xii on the possible anion disorder in selenate alums prediction of the crystal structure and vibrational spectra of kal seo4 2·12h2o and related alums |
| topic | alums crystal structure, prediction of vibrational spectra sulfates selenates anion disorder |
| url | https://mjcce.org.mk/index.php/MJCCE/article/view/675 |
| work_keys_str_mv | AT vladimirmpetrusevski vibrationalspectraofhexaaquacomplexesxiionthepossibleaniondisorderinselenatealumspredictionofthecrystalstructureandvibrationalspectraofkalseo4212h2oandrelatedalums |