ARII Hidekazu

写真a

Affiliation

Faculty of Education Science education

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Degree 【 display / non-display

  • 博士(工学) ( 2003.3   名古屋工業大学 )

Research Areas 【 display / non-display

  • Nanotechnology/Materials / Inorganic/coordination chemistry

 

Papers 【 display / non-display

  • Synthesis of Blue Flavylium Ion and Its Adsorption to Inorganic Materials for Utilization as a Repeatable pH Indicator

    Tomoko Tanaka, Chie Kuroki, Hidekazu Arii

    98   102 - 111   2022.3

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

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  • Preparation of Flavylium Ion Adsorbed on Zeolite as a Repeatable pH Indicator Reviewed

    Chie Kuroki, Hidekazu Arii

    8 ( 2 )   No5-1 - No5-7   2022.3

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

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  • Synthesis of 1-Silabenzo[ d, e]isochromanes via Electrophilic Aromatic Substitution of Aldehydes Activated by Silylium Ion Reviewed

    Arii H., Nakao K., Masuda H., Kawashima T.

    ACS Omega   7 ( 6 )   5166 - 5175   2022.2

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:ACS Omega  

    A strong Lewis acid silylium ion was utilized for dehydrogenative annulation between dialkyl(1-naphthyl)silanes 1 and aldehydes 2. Silane 1a was reacted with [Ph3C][B(C6F5)4] in the presence of 2,6-di-tert-butyl-4-methylpyridine and aldehydes 2 to afford the annulation product, 1-silabenzo[d,e]isochromanes 3, in moderate isolated yields. The annulation occurred only at the 8-position on the 1-naphthyl group. The silylium ion-promoted hydrosilylation proceeded competitively to afford silyl ethers 4 via the same intermediates, silylcarboxonium ions, in the dehydrogenative annulation. The ratio of 3 and 4 was affected by solvents and the electronic properties of aromatic aldehydes; for example, the use of less polar solvents and that of benzaldehydes with an electron-withdrawing group at the para-position predominantly yielded 3. This annulation reaction was applicable to aldehydes bearing a heteroaromatic group and aliphatic alkyl groups. Judging from these results, both the formation of silylcarboxonium ions by in situ-generated silylium ions and the electrophilic aromatic substitution are important for this annulation reaction.

    DOI: 10.1021/acsomega.1c06228

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  • High-pressure syntheses and crystal structure analyses of a new low-density CaFe<inf>2</inf>O<inf>4</inf>-related and CaTi<inf>2</inf>O<inf>4</inf>-type MgAl<inf>2</inf>O<inf>4</inf>phases Reviewed

    Ishii T., Criniti G., Bykova E., Dubrovinsky L., Katsura T., Arii H., Kojitani H., Akaogi M.

    American Mineralogist   106 ( 7 )   1105 - 1112   2021.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:American Mineralogist  

    Three single crystals of CaTi2O4 (CT)-type, CaFe2O4 (CF)-type, and new low-density CaFe2O4 (LD-CF) related MgAl2O4 were synthesized at 27 GPa and 2500 °C and also CT-type MgAl2O4 at 45 GPa and 1727 °C using conventional and advanced multi-anvil technologies, respectively.The structures of CT-type and LD-CF related MgAl2O4 were analyzed by single-crystal X-ray diffraction. The lattice parameters of the CT-type phases synthesized at 27 and 45 GPa were a = 2.7903(4), b = 9.2132(10), and c = 9.3968(12) Å, and a = 2.7982(6), b = 9.2532(15), and c = 9.4461(16) Å, respectively, (Z = 4, space group: Cmcm) at ambient conditions. This phase has an AlO6 octahedral site and an MgO8 bicapped trigonal prism with two longer cation-oxygen bonds. The LD-CF related phase has a novel structure with orthorhombic symmetry (space group: Pnma), and lattice parameters of a = 9.207(2), b = 3.0118(6), and c = 9.739(2) Å (Z = 4). The structural framework comprises tunnel-shaped spaces constructed by edge- and corner-sharing of AlO6 and a 4+1 AlO5 trigonal bipyramid, in which MgO5 trigonal bipyramids are accommodated. The CF-type MgAl2O4 also has the same space group of Pnma but a slightly different atomic arrangement, with Mg and Al coordination numbers of 8 and 6, respectively. The LD-CF related phase has the lowest density of 3.50 g/cm3 among MgAl2O4 polymorphs, despite its high-pressure synthesis from the spinel-type phase (3.58 g/cm3), indicating that the LD-CF related phase formed via back-transformation from a high-pressure phase during the recovery. Combined with the previously determined phase relations, the phase transition between CF-and CT-type MgAl2O4 is expected to have a steep Clapeyron slope. Therefore, CT-type phase may be stable in basaltic- and continental-crust compositions at higher temperatures than the average mantle geotherm in the wide pressure range of the lower mantle. The LD-CF related phase could be found in shocked meteorites and used for estimating shock conditions.

    DOI: 10.2138/am-2021-7619

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  • Synthesis of Germacyclic Compounds by Cyclization and Annulation Reactions Utilizing In Situ Generated Germyl Cations Reviewed

    Hidekazu Arii, Yaeko Iwanami, Daisuke Nakane, Hideki Masuda, Jin Matsumoto, Tsutomu Shiragami, Kunio Mochida, Takayuki Kawashima

    Organometallics   40 ( 9 )   1363 - 1370   2021.5

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.organomet.1c00141

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MISC 【 display / non-display

  • ジヒドロジシランから誘導される多核¬白金–ケイ素錯体の合成 Invited

    有井 秀和, 持田 邦夫

    ケイ素化学協会誌   25   28 - 31   2010.11

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)