Production and characterization of actinide metallofullerenes |
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| Authors: | K. Akiyama K. Sueki H. Haba K. Tsukada M. Asai T. Yaita Y. Nagame K. Kikuchi M. Katada H. Nakahara |
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| Affiliation: | (1) Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan;(2) Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki, 319-1195, Japan;(3) Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki, 319-1195, Japan;(4) Graduate School of Science, Tokyo Metropolitan University, Minami-ohsawa, Hchioji, Tokyo, 192-0397, Japan;(5) Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan |
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| Abstract: | We have, previously, reported on the HPLC elution behavior of the Th, Pa, U, Np, and Am metallofullerenes and the UV/vis/NIR absorption spectra of the Th@C84 and U@C82 species. In this paper, the followings are reported: (1) Pu metallofullerenes were produced and their HPLC elution behavior was investigated using a radiotracer technique. The HPLC chromatogram of this metallofullerene was found to be almost the same as that of the Np and Am metallofullerenes. (2) The oxidation states of Th@C84 and U@C82 produced in macroscopic quantities were examined by XANES (X-ray absorption near edge structure) measurements. The oxidation state of the U atom in the C82 fullerene cage was estimated to be 3+ with the formal charge of the ionic molecule being U3+@C823-. |
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