Paramagnetism of Aqueous Actinide Cations. Part I: Perchloric Acid Media
| Autor: | Laetitia Guerin, Kenneth L. Nash, Steve Jan, Thomas F. Wall, Philippe Moisy, Claude Berthon, Claire Le Naour, Matthieu Autillo |
|---|---|
| Přispěvatelé: | Département RadioChimie et Procédés (DRCP), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Curie–Weiss law
010405 organic chemistry Magnetism Inorganic chemistry Actinide 010402 general chemistry 01 natural sciences Magnetic susceptibility 0104 chemical sciences Inorganic Chemistry Perchlorate chemistry.chemical_compound Paramagnetism chemistry Diamagnetism Perchloric acid [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Physical and Theoretical Chemistry |
| Zdroj: | Inorganic Chemistry Inorganic Chemistry, 2014, 53, pp.2450-2459. ⟨10.1021/ic402371x⟩ Inorganic Chemistry, American Chemical Society, 2014, 53, pp.2450-2459. ⟨10.1021/ic402371x⟩ |
| ISSN: | 0020-1669 1520-510X |
| DOI: | 10.1021/ic402371x⟩ |
| Popis: | A comprehensive study of actinide cation paramagnetism in acidic aqueous solution has been completed in perchlorate media. Employing the Evans method, all the readily accessible actinide cations have been studied using our specially outfitted NMR spectrometer equipped for use with radioactive samples. The effective magnetic moments observed, ranging from 0 to 13 μB, differ from the isoelectronic lanthanides, previous solid actinide studies, and older solution studies. Actinide (IV) and (V) ions show less paramagnetic character, while some actinide (III) ions exhibit greater paramagnetic behavior than predicted from free-ion calculation. Temperature dependence of actinide magnetic susceptibilities from 5 to 80 °C are in good agreement with a Curie-like law except for U(VI), which appears to be temperature-independent. Diamagnetic behavior of Th(IV) exhibits a very low temperature dependence of the magnetic susceptibility. Some explanations for the observations are offered, and the 5f electron behavior is compared to the 4f analogues. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|