研究者詳細 - 安里　英治

論文 - 安里　英治

分割表示28 件中 1 - 20 件目／全件表示 >>

Structures of Dimer-of-Dimers Type Defect Cubane Tetranuclear Copper(II) Complexes with Novel Dinucleating Ligands

Ryusei Hoshikawa, Ryoji Mitsuhashi, Eiji Asato, Jianqiang Liu, Hiroshi Sakiyama

Molecules 27 ( 2 ) 576 2022年01月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

この論文にアクセスする

DOI

Crystal Structure of S8 Molecule from Thiourea

MIKURIYA Masahiro, TANIGUCHI Kazuki, KOYAMA Yoshiki, WATANABE Hiroaki, YOSHIOKA Daisuke, MITSUHASHI Ryoji, ASATO Eiji

X-ray Structure Analysis Online ( 社団法人日本分析化学会 ) 36 ( 0 ) 1 - 2 2020年 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

Sulfur S8 was isolated from a reaction solution of thiourea and bismuth nitrate in N,N-dimethylformamide. The crystal structure was determined by the single-crystal X-ray diffraction method at 90 K. It crystallizes in the orthorhombic space group Fddd with a = 10.3310(8)Å, b = 12.6786(10)Å, c = 24.3519(19)Å, V = 3189.7(4)Å3, Dx = 2.136 g/cm3, and Z = 6. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0220 and 0.0570, respectively, for all 1864 independent reflections. The S8 molecule has a crown-shaped ring structure with the α-form.

この論文にアクセスする

DOI

Synthesis and magnetic properties of a dinuclear manganese(II) complex with two manganese(II) ions of C-2-twisted octahedral geometry

Hiroshi Sakiyama, Masatoshi Kato, Satoshi Sasaki, Moriya Tasaki, Eiji Asato, Masayuki Koikawa

POLYHEDRON ( PERGAMON-ELSEVIER SCIENCE LTD ) 111 32 - 37 2016年06月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

A dinuclar manganese(II) complex [Mn-2(sym-hcp)(2)](BPh4)(2).2acetone.2H(2)O (1) was synthesized with a new dinucleating ligand, 4-chloro-2,6-bis1(2-hydroxyethyl)methylaminomethyllphenol [H(sym-hcp)I, for the purpose of studying the magnetic properties. The single-crystal X-ray analysis revealed a bis-mu-phenolato-dimanganese(II) core structure containing two distorted octahedral manganese(II) ions of C-2 symmetry. The order of the coordination bond lengths is Mn-O(phenolato) < Mn-O(hydroxy) < Mn-N. Magnetic susceptibility data for 1 was fitted well with the parameters 2J = -0.93 cm(-1) and g = 2.03, indicating weak antiferromagnetic interaction. (C) 2016 Elsevier Ltd. All rights reserved.

この論文にアクセスする

DOI

Effects of La doping on structural, optical, electronic properties of Sr2Bi2O5 photocatalyst

Yuki Obukuro, Shigenori Matsushima, Kenji Obata, Takuya Suzuki, Masao Arai, Eiji Asato, Yuji Okuyama, Naoki Matsunaga, Go Sakai

JOURNAL OF ALLOYS AND COMPOUNDS ( ELSEVIER SCIENCE SA ) 658 139 - 146 2016年02月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

Single-phase Sr2Bi2O5 was obtained by calcination of the heterobimetallic complex precursor Sr [Bi(DTPA)]center dot 9H(2)O (DTPA is diethylenetriaminepentaacetic acid) at 700 degrees C for 6 h. The effect of La doping on the crystal structure, surface area, morphology, surface chemical state, and absorption properties of Sr2Bi2O5 samples prepared from Sr[Bi(DTPA)]center dot 9H(2)O were investigated. No traces of an impurity phase were detected in samples with a lower La content (3 and 5 mol%), while impurity phases such as Sr2Bi2O5 and SrCO3 were observed in Sr2Bi2O5 samples with larger La contents of 8 and 10 mol%. The Brunauer-Emmett-Teller surface area of Sr2Bi2O5 increased slightly with the content of La. High-resolution transmission electron microscopy revealed clear crystalline planes for both undoped and La-doped Sr2Bi2O5 samples without amorphous phases. Meanwhile, X-ray photoelectron spectroscopy indicated that the valence states of constituent metals were Sr2+, Bi3+, and La3+. The solubility limit of La in the Sr2Bi2O5 crystal phase was determined from Raman scattering measurements. La atoms substituted Bi sites when the doping content was low, while both Bi and Sr sites were substituted with La when the content of La was high. The electronic structure of Sr2Bi2O5 could be modified by La doping, resulting in a red shift of the absorption edge with increasing La content. The band-gap narrowing of Sr2Bi2O5 with La-doping was reproduced in energy-band calculations. The photocatalytic activity of Sr2Bi2O5 under visible-light irradiation for the oxidation of isopropanol was enhanced by doping with La. (C) 2015 Elsevier B.V. All rights reserved.

この論文にアクセスする

DOI

Synthesis and Characterization of a Di-µ-oxalato Tetracopper(Ⅱ) Complex with Tetranucleating Macrocyclic Ligand

Miyazato Yuji, Asato Eiji, Ohba Masaaki, Wada Tohru

Bulletin of the Chemical Society of Japan ( 公益社団法人日本化学会 ) 89 ( 4 ) 430 - 436 2016年 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

A tetracopper(II) complex containing two oxalate anions in the metal-based host cavity, [Cu4(Lpy)(µ-ox)2](PF6)2·2(2-PrOH), where ox2−: oxalato (C2O42−), was prepared by reacting H2Lpy, a phenol-based tetranucleating macrocyclic ligand with four pyridylmethyl pendant arms, Cu(ClO4)2·6H2O, and sodium oxalate (1:4:2 stoichiometry, respectively) in methanol, followed by exchange of the counteranion with excess of NH4PF6. Single-crystal X-ray diffraction of 1 revealed that two {Cu(II)Cu(II)} units, bridged by a phenolato group of Lpy2−, were connected by two oxalato anions, to construct a rectangular “{CuCu}(µ-ox)2{CuCu}” tetranuclear framework. This rectangular framework was maintained in DMF solution. The magnetic measurement of 1 in the 2–300 K range revealed antiferromagnetic behavior. The antiferromagnetic interaction in this complex occurs between the Cu(II) centers bridged by an oxalate (J = −140 cm−1).

この論文にアクセスする

DOI

Structural investigation of nickel(II) complexes with bidentate aminoether ligands in solution based on the electronic spectra

Ryo Yamaguchi, Takashi Tokue, Yoshio Watanabe, Katsuya Tone, Yusuke Tamashiro, Eiji Asato, Hiroshi Sakiyama

POLYHEDRON ( PERGAMON-ELSEVIER SCIENCE LTD ) 96 44 - 50 2015年08月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

For the purpose of investigating molecular structures in solution based on electronic spectra, two mononuclear nickel(II) complexes, [Ni(moen)(2)(DMF)(2)](BPh4)(2) (1) and [Ni(thfn)(2)(DMF)(2)](BPh4)(2) (2), were newly prepared using bidentate aminoether ligands [moen = 2-methoxyethylamine; thfn = 2-tetrahydro-furfurylamine; DMF=N,N-dimethylformamide]. Judging from the molar conductance, the complexes are considered to exist as monomeric cations in DMF solution. The electronic spectra of the complexes were measured in DMF and the spectra were typical for an octahedral geometry for both complexes, showing three spin-allowed d-d transition bands. Using the Gaussian curve fitting method, the spin-allowed bands were found to show a 2:1, 1:2 and 1:2 splitting pattern from lower to higher energy, which corresponds to a tetragonally elongated geometry. That is, the axial ligand field is weaker than the equatorial ligand field, and the ether oxygen atoms are considered to be in trans-positions. In order to ascertain the structures in solution, conformational analysis was conducted based on density functional theory (DFT) computations. The DFT results provided detailed structures which are consistent with the spectroscopic results. (C) 2015 Elsevier Ltd. All rights reserved.

この論文にアクセスする

DOI

Preparation and Characterization of Heterobimetallic Complex, Sr[Bi(DTPA)]·9H2O, Derived La-Doped Sr2Bi2O5

Obukuro Yuki, Sakai Go, Okuyama Yuji, Matsunaga Naoki, Matsushima Shigenori, Obata Kenji, Asato Eiji

Chemistry Letters ( 公益社団法人日本化学会 ) 44 ( 7 ) 890 - 892 2015年 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

Single-phase Sr2Bi2O5 was formed by calcination of the heterobimetallic complex, Sr[Bi(DTPA)]·9H2O, at 700 °C for 6 h in air. La-doping by 5 and 10 mol % into Sr2Bi2O5 was also examined. There were no traces of impurity phase in the 5 mol % La-doped Sr2Bi2O5 powder, on the other hand, impurity phases such as Sr3Bi4O9 and SrCO3 were identified for the 10 mol % La-doped sample. UV–vis spectroscopy revealed that the absorption edge of La-doped Sr2Bi2O5 exhibits red shift as compared to the pure Sr2Bi2O5 and the shift increases with the increase of La3+ doping. It was confirmed that the photocatalytic activity of Sr2Bi2O5 for the oxidation of isopropanol is improved with La doping under visible-light irradiation (λ ≥ 420 nm).

この論文にアクセスする

DOI

Electronic Spectral Simulation for Dinuclear Zinc (II) Complexes Bridged by a 2,3,5,6-Tetrahydroxy-1,4-benzoquinonate Ion and by a Rhodizonate Ion

H. SAKIYAMA. S. MIYAZATO, S. TAKARA, and E. ASATO

Journal of Computer Chemistry, Japan ( その他の出版社 ) 12 157 - 161 2013年

掲載種別: 研究論文（学術雑誌）

Synthesis and Crystal Structure of [RuCl3{N,N’-bis(diphenylphosphino)-2, 6-diaminopyridine}] •3CH3OH

K. Matayoshi, M. Seragaki, K. Mukai, E. Asato, and S. Takara

X-ray Structure Analysis Online ( その他の出版社 ) 28 57 - 58 2012年

掲載種別: 研究論文（学術雑誌）

Synthesis and Structural Characterization of Novel Ruthenium(II) Complexes Bearing Hydroxypicolinato Ligands

Takayuki Nakasone, Takanori Nishioka, Eiji Asato, Isamu Kinoshita, Satoshi Takara

Polyhedron ( その他の出版社 ) 45 152 - 157 2012年

掲載種別: 研究論文（学術雑誌）

Synthesis and Characterization of a Tetracopper(II) Complex Having a [Cu4(µ4-O)] Framework Stabilized by the Tetranucleating Macrocyclic Ligand

Y. Miyazato, E. Asato, M. Ohba, and T. Wada

Bulletin of the Chemical Society of Japan ( その他の出版社 ) 85 895 - 901 2012年

掲載種別: 研究論文（学術雑誌）

Synthesis and Crystal Structure of a Nickel(II) Complex with Bis(2-methoxyethyl)amine

R. Yamaguchi, M. Tasaki, E. Asato, and H. Sakiyama

X-ray Structure Analysis Online ( その他の出版社 ) 27 5 - 6 2011年

掲載種別: 研究論文（学術雑誌）

The First Example of Metallocene-like Coordina-tion Mode of Fully Deprotonated 2,3,5,6-Tetrahydroxy-1,4-benzoquinone (THBQ4-): A Mixed-valence Heptanucler Palladium Complex [Pd7(THBQ)2(tben)6](PF6)4 (tben=N,N,N',N'-Tetra-benzylethylenediamine)

E.Asato, A.Kyan, T.Madanbashi, T.Tamura, M.Tadokoro, M.Mizuno.

Chemical Communications ( その他の出版社 ) 1227 - 1228 2010年

掲載種別: 研究論文（学術雑誌）

Synthesis and Structures of N,N,O-Scorpionato-ruthenium(II) Complexes Featuring “Non-Innocent” o-Benzoquinonediimines

J-H. Oh, T. Nishioka, R. Masui, E. Asato, I. Kinoshita, and S. Takara

Polyhedron ( その他の出版社 ) 1964 - 1967 2010年

掲載種別: 研究論文（学術雑誌）

Synthesis and Crystal Structure of [RuCl(6-hydroxypicolinato)(2,2’;6’,2”-terpyridine)]•(N,N-dimethylformamide)

Y. Nakama, T. Nishioka, T. Nakasone, E. Asato, I. Kinoshita, and S. Takara

X-ray Structure Analysis Online ( その他の出版社 ) 26 33 - 34 2010年

掲載種別: 研究論文（学術雑誌）

Synthesis and Structural Characterization of Novel Ruthenium(II) Complexes Featuring an N,N,O-Scorpionate Ligand: A Versatile Synthetic Precursor For Open-Face Scorpionatoruthenium(II) Complexes

A. Yogi, J-H. Oh, T. Nishioka, R. Tanaka, E. Asato, I. Kinoshita, and S. Takara

Polyhedron ( その他の出版社 ) 29 1508 - 1514 2010年

掲載種別: 研究論文（学術雑誌）

金属環状多核配置内に構築された巨大空孔の構造的ダイナミクスと機能性変換

その他の著者

研究報告書（理） ( 安里英治 ) 2009年03月

掲載種別: 研究論文（その他学術会議資料等）

この論文にアクセスする

DOI

ビスマスイオンを母核とするp、d、fブロック : 元素とのヘテロ金属多核錯体の合成

その他の著者

研究報告書（理） ( 安里英治 ) 2009年03月

掲載種別: 研究論文（その他学術会議資料等）

この論文にアクセスする

DOI

Dinuclear Zinc Complex, [Zn2(μ-H2THBQ)(TPA)2]-(ClO4)2, [TPA=Tris(2-pyridylmethyl)amine; H2THBQ2–=2,3,5,6-Tetrahydroxy-1,4-benzo-quinonate], Exhibiting Two-proton Coupled Two-electron Donating Ability

E.Asato, S.Miyazato, H.Tohma, S.Takara, M.Tadokoro, Y.Miyazato, D.Yoshioka, M.Mikuriya.

Chemistry Letters ( その他の出版社 ) 1170 - 1171 2009年

掲載種別: 研究論文（学術雑誌）

Preparation of Heteronuclear Bi1-xLax[Fe(CN)6]・n(H2O) Complexes and Their Thermal Decomposition

Hiromichi Aono, Satoshi Nakano, Nobuyuki Kondo, Haruo Katagishi, Masatomi Sakamoto, Eiji Asato, Yoshihiko Sadaoka

Chemistry Letters ( その他の出版社 ) 568 - 569 2002年

掲載種別: 研究論文（学術雑誌）

　前のページ- 次のページ　

<安里 英治>

論文 - 安里 英治

<安里　英治>

論文 - 安里　英治