CiNii Articles - OHASHI Yuji

1

Chirality Inversion in a Crystal Only by Photoirradiation

NITAMI Tsuyoshi , SEKINE Akiko , UEKUSA Hidehiro , OHASHI Yuji

When a crystal of [(S)-1-cyclohexylethylamine]bis(dimethylglyoximato)[(S)-1-(ethoxycarbonyl)ethyl]cobalt(III) was irradiated with a halogen lamp, the absolute con …

Bulletin of the Chemical Society of Japan 84(10), 1066-1074, 2011-10-15

J-STAGE References (25)
2

Direct Observation of Different Reaction Pathways by X-rays in the Photoisomerization of Cobaloxime Complexes with Diphenylboron Bridging

HIRANO Akira , SEKINE Akiko , UEKUSA Hidehiro , OHASHI Yuji

Bulletin of the Chemical Society of Japan 84(5), 496-504, 2011-05-15

References (23)
3

Elongated Lifetime of Unstable Colored Species by Intermolecular Hydrogen Bond Formation in Photochromic Crystals

JOHMOTO Kohei , SEKINE Akiko , UEKUSA Hidehiro , OHASHI Yuji

Bulletin of the Chemical Society of Japan 82(1), 50-57, 2009-01-15

References (29)
4

A New Photoisomerization Process of the 4-Cyanobutyl Group in a Cobaloxime Complex Crystal Observed by Neutron Diffraction

HOSOYA Takaaki , UEKUSA Hidehiro , OHASHI Yuji , OHHARA Takashi , KUROKI Ryota

Bulletin of the Chemical Society of Japan 79(5), 692-701, 2006-05-15

References (29) Cited by (1)
5

Rational Syntheses of Novel Linear Chain Rhodium(I)-Semiquinonato Complexes Using Redox Reaction of Rh_4(CO)_<12> Cluster with o-Benzoquinone Derivatives

MITSUMI Minoru , UMEBAYASHI Shunsuke , OZAWA Yoshiki , TADOKORO Makoto , KAWAMURA Haruki , TORIUMI Koshiro

Chemistry letters 33(8), 970-971, 2004-08-05

References (7)
6

X-ray Analysis of Excited-State Structures of the Diplatinum Complex Anions in Five Crystals with Different Cations

YASUDA Nobuhiro , UEKUSA Hidehiro , OHASHI Yuji

Bulletin of the Chemical Society of Japan 77(5), 933-944, 2004-05-15

References (29)
7

Structure Analysis of Photo-induced Triplet Phenylnitrene Using Synchrotron Radiation

KAWANO Masaki , TAKAYAMA Terufumi , UEKUSA Hidehiro , OHASHI Yuji , OZAWA Yoshiki , MATSUBARA Koudatsu , IMABAYASHI Hidekazu , MITSUMI Minoru , TORIUMI Koshiro

The crystal structures of [(PhCH2)2NH2]+[m-C6H4</SUB …

Chemistry Letters 32(10), 922-923, 2003-10-05

J-STAGE References (16)
8

Deuterium Migration Mechanism in Chiral Thiolactam Formation by Neutron Diffraction Analysis

HOSOYA Takaaki , UEKUSA Hidehiro , OHASHI Yuji , OHHARA Takashi , KIMURA Hiroyuki , NODA Yukio

The single-crystal neutron diffraction revealed that in the process of photo-induced β-thiolactam formation from N,N-dibenzyl-1-cyclohexenecarbothioamide a d …

Chemistry Letters 32(8), 742-743, 2003-08-05

IR J-STAGE References (11) Cited by (1)
9

Physicochemical and Crystal Structure Analyses of the Antidiabetic Agent Troglitazone

KOBAYASHI Katsuhiro , FUKUHARA Hiroshi , HATA Tadashi , SEKINE Akiko , UEKUSA Hidehiro , OHASHI Yuji

The antidiabetic agent troglitazone has two asymmetric carbons located at the chroman ring and the thiazolidine ring and is produced as a mixture of equal amounts of four optical isomers, 2R& …

Chemical and Pharmaceutical Bulletin 51(7), 807-814, 2003-07-01

J-STAGE References (19)
10

Photoexcited Crystallography of Diplatinum Complex by Multiple-exposure IP Method

OZAWA Yoshiki , TERASHIMA Madoka , MITSUMI Minoru , TORIUMI Koshiro , YASUDA Nobuhiro , UEKUSA Hidehiro , OHASHI Yuji

Molecular distortion of a photoexcited diplatinum(II) complex in a single crystal has been directly observed by accurate synchrotron radiation diffraction studies. Photoexcited crystallographic analys …

Chemistry Letters 32(1), 62-63, 2003-01-05

J-STAGE References (9)
11

Physicochemical Analyses of Phase Transition and Dehydration Processes of a New Oral 1β-Methylcarbapenem Antibiotic Agent CS-834

KOBAYASHI Katsuhiro , FUKUHARA Hiroshi , KAWAMOTO Isao , HATA Tadashi , SEKINE Akiko , UEKUSA Hidehiro , OHASHI Yuji

The characterizations of the anhydrate (A-form), monohydrate (B1-form), and dihydrate (B2-form) of CS-834 were investigated by powder X-ray diffraction, differential scanning calorimetry (DSC), thermo …

Chemical and Pharmaceutical Bulletin 50(12), 1570-1573, 2002-12-01

J-STAGE References (19) Cited by (1)
12

Excited-state Structure of a Platinum Complex by X-ray Analysis

YASUDA Nobuhiro , KANAZAWA Masaki , UEKUSA Hidehiro , OHASHI Yuji

Irradiating a crystal of [N(C5H11)4]2[Pt2(H)2(pop)4 …

Chemistry Letters 2002(11), 1132-1133, 2002-11-05

J-STAGE References (8)
13

Synchrotron Radiation Structure Analyses of the Light-induced Radical Pair of a Hexaarylbiimidazolyl Derivative. Origin of the Spin-Multiplicity Change

KAWANO Masaki , OZAWA Yoshiki , MATSUBARA Koutatsu , IMABAYASHI Hidekazu , MITSUMI Minoru , TORIUMI Koshiro , OHASHI Yuji

In situ synchrotron radiation structure analyses of a light-induced radical pair from o-Cl-HABI were performed by using an X-ray vacuum camera at 23–70 K at the BL02B1 station …

Chemistry Letters 2002(11), 1130-1131, 2002-11-05

J-STAGE References (11)
14

Crystalline-State Photoisomerization of α,β-Unsaturated Thioamide Analyzed by X-rays

HOSOYA Takaaki , OHHARA Takashi , UEKUSA Hidehiro , OHASHI Yuji

When a crystal of N,N-dibenzyl-1-cyclohexenecarbothioamide was exposed to UV light at 263 K, the cell dimensions were gradually changed with retention of the sing …

Bulletin of the Chemical Society of Japan 75(10), 2147-2151, 2002-10-15

J-STAGE References (28) Cited by (1)
15

Structural Phase Transition and Valence Fluctuation Observed in a New MMX Chain Compound, Pt_2(n-PrCS_2)_4I

MITSUMI Minoru , UMEBAYASHI Shunsuke , OZAWA Yoshiki , TORIUMI Koshiro , KITAGAWA Hiroshi , MITANI Tadaoki

Chemistry letters 2002(2), 258-259, 2002-02-05

References (6)
16

Solid-State Specific and Unidirectional Photoisomerization of 3-Substituted Propyl to 1-Substituted Propyl Cobaloxime Complexes via 2-Substituted Propyl Complexes

OHGO Yoshiaki , KURASHIMA Futoshi , HIRAGA Yoshito , ISHIDA Kanako , TAKATSU Naoko , ARAI Yoshifusa , TAKEUCHI Seiji

Solid state-specific (γ→β→α)photoisomerization of 3-cyanopropyl and 3-(methoxycarbonyl)propyl cobaloxime complexes were found to occur on visible-light irradiation. There ex …

Chemistry Letters 2001(11), 1190-1191, 2001-11-05

J-STAGE References (8)
17

Crystal Structure Analysis of a Hexatungstate by a High-Energy X-ray Diffraction Experiment Using an Imaging Plate Weissenberg Camera at the BL04B2 Beamline of SPring-8^1

OZEKI Tomoji , KUSAKA Katsuhiro , HONMA Noritaka , NAKAMURA Yuji , NAKAMURA Setsuko , OIKE Shunsuke , YASUDA Nobuhiro , IMURA Hiroyuki , UEKUSA Hidehiro , ISSHIKI Maiko , KATAYAMA Chuji , OHASHI Yuji

An imaging plate Weissenberg camera was installed in the BL04B2 beamline of SPring-8 aiming at automated crystal structure determinations of small molecules. Since this beamline is designed to provide …

Chemistry Letters 2001(8), 804-805, 2001-08-05

J-STAGE References (20)
18

Platinum-Catalyzed Bis-Germylation of Alkynes with Organodigermanes and Cyclic Oligogermanes

MOCHIDA Kunio , WADA Tohru , SUZUKI Kaoru , HATANAKA Wakako , NISHIYAMA Yuriko , NANJO Masato , SEKINE Akiko , OHASHI Yuji , SAKAMOTO Masato , YAMAMOTO Akio

Hexamethyldigermane, Me3GeGeMe3, reacted with various alkynes in the presence of platinum complexes at 120 °C to afford Z–1,2 …

Bulletin of the Chemical Society of Japan 74(1), 123-137, 2001-01-15

J-STAGE References (40)
19

Structure of NG-061, a Novel Potentiator of Nerve Growth Factor (NGF) Isolated from Penicillium minioluteum F-4627

BHANDARI Renuka , EGUCHI Tadashi , SEKINE Akiko , OHASHI Yuji , KAKINUMA Katsumi , ITO Mayumi , MIZOUE Kazutoshi

J. Antibiotics 52(3), 231-234, 1999-03-25

References (8) Cited by (3)
20

Thermal Ring Contraction of 1,2-Digermacyclohexadienes Coordinated with Iron Tricarbonyl Fragment

MOCHIDA Kunio , HATANAKA Wakako , WADA Tohru , SEKINE Akiko , OHASHI Yuji , YAMAMOTO Akio

1,1,2,2-Tetraalkyl-3,6-diphenyl-1,2-digermacyclohexa-3,5-dienes (1) reacted with iron pentacarbonyl to give the corresponding tricarbonyl(η4-1,1,2,2-tetraalkyl-3,6-diphenyl- …

Chemistry Letters 1998(10), 991-992, 1998-10-05

J-STAGE References (26)

Ohashi Yuji OHASHI Yuji

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Ohashi Yuji OHASHI Yuji

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