Elusive Oxonium
- Authors: Rastsvetaeva R.K1
-
Affiliations:
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, RAS
- Issue: No 2 (2022)
- Pages: 59-61
- Section: Articles
- URL: https://journals.eco-vector.com/0032-874X/article/view/627657
- DOI: https://doi.org/10.7868/S0032874X22020065
- ID: 627657
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Abstract
First data on Raman vibrational spectra of a series of sodium-deficient hydrated eudialyte group minerals which crystal structures were investigated earlier have been obtained. These spectra turned out to be much more sensitive to the presence of hydrated forms of oxonium than the IR spectra. They contain strong bands in the range of 1300–2800 cm–1, which, by quantum electronic calculations correspond to the O···O distances of ≈2.40–2.8 Å in hydrated eudialyte-related minerals. Thus, the presence of oxonium in eudialytes is confirmed not only by indirect, but also by the direct evidences.
About the authors
R. K Rastsvetaeva
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, RAS
Email: rast.crys@gmail.com
Moscow, Russia
References
- Расцветаева Р.К., Чуканов Н.В., Аксенов С.М. Минералы группы эвдиалита: кристаллохимия, свойства, генезис. Нижний Новгород, 2012.
- Rastsvetaeva R.K., Chukanov N.V., Pekov I.V. et al. New data on the isomorphism in eudialyte-group minerals. 1. Crystal chemistry of eudialyte-group members with Na incorporated into the framework as a marker of hyperagpaitic conditions. Minerals. 2020; 10: 587.
- Rastsvetaeva R.K., Chukanov N.V. New data on the isomorphism in eudialyte-group minerals. 2. Crystal-chemical mechanisms of blocky isomorphism at the key sites (review). Minerals. 2020; 10: 720.
- Asthagiri D., Pratt L.R., Kress J.D. Ab initio molecular dynamics and quasichemical study of H+(aq). Proceedings of the National Academy of Sciences of the United States of America. 2005; 102: 6704–6708.
- Sobolewski A.L., Domcke W. Hydrated hydronium: a cluster moder or solvated electron? Physical Chemistry. 2002; 4: 4–10.
- Chukanov N.V., Vigasina M.F., Rastsvetaeva R.K. et al. The evidence of hydrated proton in Raman spectroscopy data. Journal of Raman Spectroscopy. 2022. (In press).
- Расцветаева Р.К., Викторова К.А., Аксенов С.М. Новые данные об изоморфизме в минералах группы эвдиалита. II. Уточнение структуры аквалита при 110 К. Кристаллография. 2018; 63(6): 884–889.
- Расцветаева Р.К., Соколова М.Н., Боруцкий Б.Е. Кристаллическая структура калиево-оксониевого эвдиалита. Кристаллография. 1990; 35(6): 1381–1387.
- Rozenberg K.A., Rastsvetaeva R.K., Khomyakov A.P. Decationized and hydrated eudialytes. Oxonium problem. Eur. J. Mineral. 2005; 17: 875–882.
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