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have an anomalous endohedral structure? Synthesis and single crystal X-ray structure of the carbene adductAkasaka, Takeshi*; Kono, Takayoshi*; Takematsu, Yuji*; Nikawa, Hidefumi*; Nakahodo, Tsukasa*; Wakahara, Takatsugu*; Ishitsuka, Midori*; Tsuchiya, Takahiro*; Maeda, Yutaka*; Liu, M. T. H.*; et al.
Journal of the American Chemical Society, 130(39), p.12840 - 12841, 2008/10
Times Cited Count：76 Percentile：84.42(Chemistry, Multidisciplinary)We report here the results on single crystal X-ray crystallographic analysis of the Gd@C carbene adduct (Gd@C(ad), Ad=adamantylidene). The Gd atom in Gd@C(Ad) is located at an off-centered position near a hexagonal ring in the C2v-C cage, as found for M@C (M = Sc and La) and La@C(Ad). Theoretical calculation also confirms the position of the Gd atom in the X-ray crystal structure.
Nagase, Midori*; Arai, Tsuyoshi*; Sano, Yuichi; Watanabe, So; Kunii, Shigeru*
no journal, ,
As a separation technology for recovering MA (III) from high-level radioactive liquid waste, we focused on an adsorbent impregnated with an NTA amide extractant. In this study, we synthesized H2EH NTA extractant, which is one of the NTA amide extractants, and investigated the adsorption / elution behavior for rare earth elements.
Yoshida, Masaaki*; Nemoto, Shuhei*; Nagase, Midori*; Arai, Tsuyoshi*; Emori, Tatsuya; Morita, Keisuke; Ban, Yasutoshi; Watanabe, So; Sano, Yuichi; Kunii, Shigeru*
no journal, ,
In this study, we investigated the adsorption characteristics of simulated nuclides of adsorbents carrying various NTA amide extracts. From the results of this test, It has become clear that HONTA-impregnated adsorbent showed a high adsorption distribution coefficient with respect to Ln (III) at a nitric acid concentration of 10
- 10
M. It has also revealed that all elements quickly reached adsorption equilibrium. In addition, the elution of the extractant and Sty / DVB was not occurred from the results of the extractant elution test from the impregnated adsorbent. We discuss the applicability of the extraction chromatography method using various NTA adsorbents.
Sato, Hiromori*; Yoshida, Masaaki*; Nemoto, Shuhei*; Nagase, Midori*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi
no journal, ,
We focused on the extraction chromatography technique using HONTA impregnated adsorbent for MA (III)/Ln (III) separation from high-level radioactive liquid waste. In this study, we had the column test for evaluating the adsorption performance with the improved carrier.
