دورية أكاديمية
Thorium nanochemistry: The solution structure of the Th(iv)-hydroxo pentamer
| العنوان: | Thorium nanochemistry: The solution structure of the Th(iv)-hydroxo pentamer |
|---|---|
| المؤلفون: | Walther, C., Rothe, J., Schimmelpfennig, B., Fuss, M. |
| المصدر: | Dalton Transactions 41 (2012), Nr. 36 |
| بيانات النشر: | Royal Society of Chemistry |
| سنة النشر: | 2012 |
| المجموعة: | Institutional Repository of Leibniz Universität Hannover |
| مصطلحات موضوعية: | Dominant species, Electrospray mass spectrometry, High energy x-rays, Nano chemistry, Orders of magnitude, Pentamers, Polymeric species, Quantum chemical calculations, Solubility limits, Solution chemistry, Solution structures, Thermodynamic data, X ray absorption fine structures, Polymers, Quantum chemistry, Solubility, Thorium, Dimers, ddc:540 |
| الوصف: | Tetravalent thorium exhibits a strong tendency towards hydrolysis and subsequent polymerization. Polymeric species play a crucial role in understanding thorium solution chemistry, since their presence causes apparent solubility several orders of magnitude higher than predicted by thermodynamic data bases. Although electrospray mass spectrometry (ESI MS) identifies Th(iv) dimers and pentamers unequivocally as dominant species close to the solubility limit, the molecular structure of Th 5(OH) y polymers was hitherto unknown. In the present study, X-ray absorption fine structure (XAFS) spectroscopy, high energy X-ray scattering (HEXS) measurements, and quantum chemical calculations are combined to solve the pentamer structure. The most favourable structure is represented by two Th(iv) dimers linked by a central Th(iv) cation through hydroxide bridges. © 2012 The Royal Society of Chemistry. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1477-9226 |
| العلاقة: | http://dx.doi.org/10.15488/2212Test; http://www.repo.uni-hannover.de/handle/123456789/2237Test |
| DOI: | 10.15488/2212 |
| الإتاحة: | https://doi.org/10.15488/2212Test https://doi.org/10.1039/c2dt30243hTest http://www.repo.uni-hannover.de/handle/123456789/2237Test |
| حقوق: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. ; frei zugänglich |
| رقم الانضمام: | edsbas.11EA01B4 |
| قاعدة البيانات: | BASE |
| تدمد: | 14779226 |
|---|---|
| DOI: | 10.15488/2212 |