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21 results on '"Kugimiya, Shinichi"'

7. Adsorptive properties of milk proteins onto novel porous zirconia

Author

Nagata Fukue, Kato Katsuya, Kaneko Takamasa, and Kugimiya Shinichi

Subjects
Thesaurus (information retrieval), Materials science, Materials Chemistry, Ceramics and Composites, Nanotechnology, Cubic zirconia, General Chemistry, Condensed Matter Physics, Porosity, Science, technology and society
Published
2020
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14. Syntheses, Characterizations, and Crystal Structures of Dinitrogen‐Divanadium Complexes Bearing Triamidoamine Ligands.

Author

Kokubo, Yoshiaki, Wasada‐Tsutsui, Yuko, Yomura, Shunsuke, Yanagisawa, Sachiko, Kubo, Minoru, Kugimiya, Shinichi, Kajita, Yuji, Ozawa, Tomohiro, and Masuda, Hideki

Subjects
CRYSTAL structure, CHEMICAL yield, PROTON transfer reactions, LEATHERBACK turtle
Abstract

We recently reported the syntheses, crystal structures, and protonation reactions of dinitrogen divanadium complexes bearing triamidoamine ligands, ([{V(LR)}2(µ‐N2)] (R = iBu (1), EtBu (2), and iPr2Bn (3)). In this study, we have additionally synthesized two novel dinitrogen‐divanadium complexes with similar derivatives (R = Bn (4) and MeBn (5)), which are characterized spectroscopically and structurally. The X‐ray structures have both revealed a divanadium complex with a bridging N2 ligand. The protonation reactions of the µ‐N2 ligands for 4 and 5 in the presence of M+[C10H8]– (M+ = Na+, K+) and proton source (HOTf or [LutH](OTf)) have given ammonia. Particularly, the NH3 yield from the reaction of 5 with K+[C10H8]– and [LutH](OTf) has been 341 %. Furthermore, mixed valence Na+ adduct of 1, [Na{V(LiBu)}2(µ‐N2)] (6), which is prepared by the reaction of 1 with sodium metal, has been prepared and its crystal structure has also been determined. Compound 6 is electrochemically and spectroscopically characterized, which is also evaluated by DFT calculation method. [ABSTRACT FROM AUTHOR]

Published
2020
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15. Dinitrogen Fixation by Vanadium Complexes with a Triamidoamine Ligand

Author

Kokubo, Yoshiaki, primary, Yamamoto, Chiaki, additional, Tsuzuki, Kazuki, additional, Nagai, Takuya, additional, Katayama, Akira, additional, Ohta, Takehiro, additional, Ogura, Takashi, additional, Wasada-Tsutsui, Yuko, additional, Kajita, Yuji, additional, Kugimiya, Shinichi, additional, and Masuda, Hideki, additional

Published
2018
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