A Mixed-Valent Uranium Phosphonate Framework Containing U(IV) , U(V) , and U(VI)

It is shown that U(V) O2 (+) ions can reside at U(VI) O2 (2+) lattice sites during mild reduction and crystallization process under solvothermal conditions, yielding a complicated and rare mixed-valent uranium phosphonate compound that simultaneously contains U(IV) , U(V) , and U(VI) . The presence...

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Veröffentlicht in:Chemistry : a European journal 2016-08, Vol.22 (34), p.11954-11957
Hauptverfasser: Chen, Lanhua, Zheng, Tao, Bao, Songsong, Zhang, Linjuan, Liu, Hsin-Kuan, Zheng, Limin, Wang, Jianqiang, Wang, Yaxing, Diwu, Juan, Chai, Zhifang, Albrecht-Schmitt, Thomas E, Wang, Shuao
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Sprache:eng
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Zusammenfassung:It is shown that U(V) O2 (+) ions can reside at U(VI) O2 (2+) lattice sites during mild reduction and crystallization process under solvothermal conditions, yielding a complicated and rare mixed-valent uranium phosphonate compound that simultaneously contains U(IV) , U(V) , and U(VI) . The presence of uranium with three oxidation states was confirmed by various characterization techniques, including X-ray crystallography, X-ray photoelectron, electron paramagnetic resonance, FTIR, UV/Vis-NIR absorption, and synchrotron radiation X-ray absorption spectroscopy, and magnetism measurements.
ISSN:1521-3765
DOI:10.1002/chem.201602863