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1

Chiral Bis(oxazoline) Ruthenium Complexes with Bipyridyl-Type N-Heteroaromatics: Comparative Stereochemical and Photochemical Characterization of their Λ- and Δ-Diastereomeric Geminate Isomers

Prof. Dr. Masayoshi Onishi, Yoko Tashiro, Dr. Yasuhiro Arikawa, Junko Nagaoka, Prof. Dr. Keisuke Umakoshi, Dr. Yusuke Sunada, Prof. Dr. Koichi Nozaki

Journal:

Chemistry – An Asian Journal

Year:

2011

Language:

english

File:

PDF, 593 KB

english, 2011

2

NC Coupling of NO Ligands with β-Carbon Atoms in Aliphatic Tertiary Amines on Nitrosylruthenium Complexes Accompanying Oxidative Dehydrogenation of Amines and CH Activation

Dr. Taiki Asayama, Dr. Yasuhiro Arikawa, Takerou Murabe, Shoko Agari, Prof. Keisuke Umakoshi, Prof. Masayoshi Onishi

Journal:

Chemistry – An Asian Journal

Year:

2012

Language:

english

File:

PDF, 217 KB

english, 2012

3

Pyrazolato- and 3,5-Dimethylpyrazolato-Bridged Dinuclear Platinum(II), Palladium(II), and Their Mixed-Metal Complexes of 2,2′-Bipyrimidine. Syntheses, Structures, and Luminescent Properties

Umakoshi, Keisuke, Kimura, Kazutoyo, Kim, Yong Hun, Tsukimoto, Yuya, Arikawa, Yasuhiro, Onishi, Masayoshi, Ishizaka, Shoji, Kitamura, Noboru

Journal:

Bulletin of the Chemical Society of Japan

Year:

2010

Language:

english

File:

PDF, 529 KB

english, 2010

4

Cobalt(III) Complexes with [N 6− n X n ]-Type Ligands. VIII. Preparation and Properties of Isomers of the (Salicylaldoximato)(triethylenetetramine)cobalt(III) Complexes and Crystal Structure of cis - β 1 -( RS , SR )-[Co(salal)(trien)]Cl·(CH 3 COCH 3 )·2H 2 O

Toyota, Eiko, Umakoshi, Keisuke, Yamamoto, Yoshihisa

Journal:

Bulletin of the Chemical Society of Japan

Year:

1995

File:

PDF, 1.16 MB

1995

5

Serine racemase enhances growth of colorectal cancer by producing pyruvate from serine

Ohshima, Kenji, Nojima, Satoshi, Tahara, Shinichiro, Kurashige, Masako, Kawasaki, Keisuke, Hori, Yumiko, Taniguchi, Moyu, Umakoshi, Yutaka, Okuzaki, Daisuke, Wada, Naoki, Ikeda, Jun-ichiro, Fukusaki,

Journal:

Nature Metabolism

Year:

2020

File:

PDF, 14.92 MB

2020

6

Unusual Magnetic Properties of the Edge-Sharing Bioctahedral Dirhenium(IV) Complex of Pyridine-2-thiolate

Keisuke Umakoshi, Noriko Misasa, Chikako Ohtsu, Takashi Kojima, Maxim Sokolov, Makoto Wakeshima, Yukio Hinatsu, Masayoshi Onishi

Journal:

Angewandte Chemie

Year:

2005

Language:

english

File:

PDF, 147 KB

english, 2005

7

Unusual Magnetic Properties of the Edge-Sharing Bioctahedral Dirhenium(IV) Complex of Pyridine-2-thiolate

Keisuke Umakoshi, Noriko Misasa, Chikako Ohtsu, Takashi Kojima, Maxim Sokolov, Makoto Wakeshima, Yukio Hinatsu, Masayoshi Onishi

Journal:

Angewandte Chemie International Edition

Year:

2005

Language:

english

File:

PDF, 147 KB

english, 2005

8

Heteropolynuclear Palladium Complexes with Pyrazolate and Its 3-tert-Butyl Derivatives: The Effect of Heterometal Ions on the Rate of Isomerization

Keisuke Umakoshi, Takashi Kojima, Yasuhiro Arikawa, Masayoshi Onishi

Journal:

Chemistry - A European Journal

Year:

2006

Language:

english

File:

PDF, 289 KB

english, 2006

9

Deep Blue Mixed-Valent PtIIIPtIIIPtII Complex [Pt3Br2(μ-pz)6] (pz=Pyrazolate) Showing Valence-Detrapping Behavior in Solution

Keisuke Umakoshi, Takashi Kojima, Yong Hun Kim, Masayoshi Onishi, Yoshihide Nakao, Shigeyoshi Sakaki

Journal:

Chemistry - A European Journal

Year:

2006

Language:

english

File:

PDF, 306 KB

english, 2006

10

Luminescent Heteropolynuclear Complexes of 3,5-Dimethylpyrazolate [Pt2Au2M2(Me2pz)8] (M=Ag, Cu) Showing the Synergistic Effect of Three Transition Elements in the Excited State

Keisuke Umakoshi, Keizo Saito, Yasuhiro Arikawa, Masayoshi Onishi, Shoji Ishizaka, Noboru Kitamura, Yoshihide Nakao, Shigeyoshi Sakaki

Journal:

Chemistry - A European Journal

Year:

2009

Language:

english

File:

PDF, 499 KB

english, 2009

11

Reactivity of pentamethylcyclopentadienyltetrachloromolybdenum(V). Synthesis, structure and electrochemical properties of [(η5-C5Me5)MoOCl]2O

Keisuke Umakoshi, Kiyoshi Isobe

Journal:

Journal of Organometallic Chemistry

Year:

1990

Language:

english

File:

PDF, 550 KB

english, 1990

12

Reactivity of [CpRhPtCl6] (Cp = η5-C5Me5). Synthesis and structures of [(CpRh)2(μ-Cl)3][PtCl5(CH3CONH2)] and [(CpRh)2(μ-Cl)3]2[PtCl6]

Keisuke Umakoshi, Katsuo Murata, Shinsuke Yamashita, Kiyoshi Isobe

Journal:

Inorganica Chimica Acta

Year:

1991

Language:

english

File:

PDF, 608 KB

english, 1991

13

Dinuclear palladium(II) complex of pyridine-2-thiol

Keisuke Umakoshi, Isamu Kinoshita, O.O.I. Shun'Ichiro

Journal:

Inorganica Chimica Acta

Year:

1987

Language:

english

File:

PDF, 177 KB

english, 1987

14

Preparation, spectroscopic properties, and dynamic behavior of a μ-oxo dirhenium(III) complex [Re2(μ-O)Cl2(tpa)2](PF6)2 (tpa=tris(2-pyridylmethyl)amine)

Hideki Sugimoto, Takuya Takahira, Takashi Yoshimura, Motoo Shiro, Mikio Yamasaki, Hiroyuki Miyake, Keisuke Umakoshi, Yoichi Sasaki

Journal:

Inorganica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 211 KB

english, 2002

15

Stereochemically non-rigid motions and structural characteristics of (η3-2-methallyl){tetrakis(3-t-butylpyrazolyl)borato}palladium(II)

Masayoshi Onishi, Mamoru Yamaguchi, Eiji Nishimoto, Yusuke Itoh, Junko Nagaoka, Keisuke Umakoshi, Hiroyuki Kawano

Journal:

Inorganica Chimica Acta

Year:

2003

Language:

english

File:

PDF, 191 KB

english, 2003

16

Synthesis, structure, and properties of sulfido-bridged dinuclear tungsten(V) complex of dithiolene, (Pr4N)2[W2(μ-S)2{S2C2(CO2Et)2}4]

Keisuke Umakoshi*, Eiji Nishimoto, Maxim Sokolov, Hiroyuki Kawano, Yoichi Sasaki, Masayoshi Onishi*

Journal:

Journal of Organometallic Chemistry

Year:

2000

Language:

english

File:

PDF, 133 KB

english, 2000

17

Synthesis and properties of amino acid-bridged dinuclear iron(III) complexes

Keisuke Umakoshi, Yasuhiro Tsuruma, Akira Takasawa, Hana Yasukawa, Chang-Eon Oh, Yoichi Sasaki

Journal:

Journal of Inorganic Biochemistry

Year:

1997

Language:

english

File:

PDF, 78 KB

english, 1997

18

Synthesis and crystal structure of [Ru2(μ-pyS)3(pyS)2](CF3SO3): the first Ru(III) complex of 2-mercaptopyridine

Maxim Sokolov, Yoichi Sasaki, Keisuke Umakoshi

Journal:

Inorganic Chemistry Communications

Year:

2001

Language:

english

File:

PDF, 128 KB

english, 2001

19

Preparation and properties of a series of (μ-oxo)di(μ-acetato) diruthenium(III) complexes, [Ru2(μ-O)(μ-CH3COO)2(pyridine)4(L)2]2+ and [Ru2(μ-O)(μ-CH3COO)2(AA)2(L)2]2+, where AA is 2,2′-bipyridine or 1,10-phenanthroline, and L is a monodentate ligand

Tatsuma Fukumoto, Akihiro Kikuchi, Keisuke Umakoshi, Yoichi Sasaki

Journal:

Inorganica Chimica Acta

Year:

1998

Language:

english

File:

PDF, 869 KB

english, 1998

20

Multistep electron-transfer properties of mononuclear trans-oxohydroxo rhenium(V), oxocentered trinuclear ruthenium(III,III,III), and -(II,III,III) complexes with coordinated imidazoles

Masaaki Abe, Tsuyoshi Mikami, Hideki Sugimoto, Keisuke Umakoshi, Akira Nagasawa, David M. Saysell, A. Geoffrey Sykes, Yoichi Sasaki

Journal:

Journal of Inorganic Biochemistry

Year:

1997

Language:

english

File:

PDF, 75 KB

english, 1997

21

Syntheses and Luminescent Properties of 3,5-Diphenylpyrazolato-Bridged Heteropolynuclear Platinum Complexes. The Influence of Chloride Ligands on the Emission Energy Revealed by the Systematic Replacement of Chloride Ligands by 3,5-Dimethylpyrazolate

Akatsu, Seiji, Kanematsu, Yasunori, Kurihara, Taka-aki, Sueyoshi, Shota, Arikawa, Yasuhiro, Onishi, Masayoshi, Ishizaka, Shoji, Kitamura, Noboru, Nakao, Yoshihide, Sakaki, Shigeyoshi, Umakoshi, Keisuk

Journal:

Inorganic Chemistry

Year:

2012

Language:

english

File:

PDF, 982 KB

english, 2012

22

Preparation, Structure, and Properties of Bis(μ-oxo)dirhenium(III,IV) and -dirhenium(IV) Complexes of Tris(2-pyridylmethyl)amine and Its (6-Methyl-2-pyridyl)methyl Derivatives

Sugimoto, Hideki, Kamei, Masaki, Umakoshi, Keisuke, Sasaki, Yoichi, Suzuki, Masatatsu

Journal:

Inorganic Chemistry

Year:

1996

Language:

english

File:

PDF, 210 KB

english, 1996

23

Reactions of (polypyrazolylborato)(benzonitrile)rutheniums with terminal alkynes: Reactivity changeover by triethylamine toward arylalkyne polymerization or formation of (arylmethyl)(carbonyl) complexes

Masayoshi Onishi, Yasuhiro Arikawa, Mamoru Yamaguchi, Tomoe Nagano, Takayuki Inoue, Atsunobu Terasoba, Suguru Matsuo, Maki Nakagawa, Hiroyuki Kawano, Junko Nagaoka, Keisuke Umakoshi, Mutsuhisa Furukaw

Journal:

Journal of Organometallic Chemistry

Year:

2012

Language:

english

File:

PDF, 260 KB

english, 2012

24

[IEEE 2012 IEEE Sensors - Taipei, Taiwan (2012.10.28-2012.10.31)] 2012 IEEE Sensors - A new intact immobilization of liposome as sensing bio nano-particle on oxidized metal electrode surface

Noda, Minoru, Takada, Keisuke, Nakai, Mariko, Yamashita, Kaoru, Shimanouchi, Toshinori, Umakoshi, Hiroshi

Year:

2012

Language:

english

File:

PDF, 1.04 MB

english, 2012

25

Synthesis and Properties of Oxo-carboxylato- and Dioxo-Bridged Diosmium Complexes of Tris(2-pyridylmethyl)amine

Sugimoto, Hideki, Kitayama, Kazuhiro, Ashikari, Kenji, Matsunami, Chikako, Ueda, Naomi, Umakoshi, Keisuke, Hosokoshi, Yuko, Sasaki, Yoichi, Itoh, Shinobu

Journal:

Inorganic Chemistry

Year:

2011

Language:

english

File:

PDF, 1009 KB

english, 2011

26

Enhanced Kinetic Lability of Ru(III) Centers in Oxo-Centered Mixed-Metal Ru 2 M Trinuclear Complexes (M = Zn and Mg)

Abe, Masaaki, Tanaka, Maiko, Umakoshi, Keisuke, Sasaki, Yoichi

Journal:

Inorganic Chemistry

Year:

1999

Language:

english

File:

PDF, 56 KB

english, 1999

27

The dinuclear palladium(II) complex of pyridine-2-thiol. Synthesis, structure, and electrochemistry

Umakoshi, Keisuke, Ichimura, Akio, Kinoshita, Isamu, Ooi, Shunichiro

Journal:

Inorganic Chemistry

Year:

1990

Language:

english

File:

PDF, 736 KB

english, 1990

28

Pyrazolato-Bridged Polynuclear Palladium and Platinum Complexes. Synthesis, Structure, and Reactivity

Umakoshi, Keisuke, Yamauchi, Yoko, Nakamiya, Keiko, Kojima, Takashi, Yamasaki, Mikio, Kawano, Hiroyuki, Onishi, Masayoshi

Journal:

Inorganic Chemistry

Year:

2003

Language:

english

File:

PDF, 324 KB

english, 2003

29

Binuclear platinum(II) and -(III) complexes of pyridine-2-thiol and its 4-methyl analog. Synthesis, structure, and electrochemistry

Umakoshi, Keisuke, Kinoshita, Isamu, Ichimura, Akio, Ooi, Shunichiro

Journal:

Inorganic Chemistry

Year:

1987

Language:

english

File:

PDF, 749 KB

english, 1987

30

Heteropolynuclear Complexes of 3,5-Dimethylpyrazolate [Pt 2 M 4 (Me 2 pz) 8 ] (M = Ag, Cu). Highly Luminescent Character of the Triplet Excited State Based on Mixed-Metal Cores

Umakoshi, Keisuke, Kojima, Takashi, Saito, Keizo, Akatsu, Seiji, Onishi, Masayoshi, Ishizaka, Shoji, Kitamura, Noboru, Nakao, Yoshihide, Sakaki, Shigeyoshi, Ozawa, Yoshiki

Journal:

Inorganic Chemistry

Year:

2008

Language:

english

File:

PDF, 1.00 MB

english, 2008

31

Methylation of a nitrosylruthenium complex bearing a hydridotris(pyrazolyl)borate ligand

Arikawa, Yasuhiro, Yamaguchi, Soseki, Haige, Ryohei, Oshiro, Eriko, Umakoshi, Keisuke, Onishi, Masayoshi

Journal:

Journal of Organometallic Chemistry

Year:

2014

Language:

english

File:

PDF, 461 KB

english, 2014

32

Preparation and characterization of the three geometrical isomers of (1,3-propanediamine-N,N'-diacetato-N,N'-di-3-propionato)chromate(III). Crystal structure of trans(O6)-K[Cr(1,3-pddda)].cntdot.3H2O

Kaizaki, Sumio, Byakuno, Masayo, Hayashi, Mariko, Legg, J. Ivan, Umakoshi, Keisuke, Ooi, Shunichiro

Journal:

Inorganic Chemistry

Year:

1987

Language:

english

File:

PDF, 701 KB

english, 1987

33

C−S Bond Cleavage of Pyridine-2-thiol: A New Functionality of Quadruply Bridged Dinuclear Platinum and Palladium Complexes

Umakoshi, Keisuke, Yamasaki, Toshinori, Fukuoka, Atsushi, Kawano, Hiroyuki, Ichikawa, Masaru, Onishi, Masayoshi

Journal:

Inorganic Chemistry

Year:

2002

Language:

english

File:

PDF, 82 KB

english, 2002

34

An in Situ X-ray Absorption Fine Structure Study of Different Oxidation States of Oxo- and Hydroxo-Bridged Ruthenium Dimers in Acetonitrile Solution

Valli, Mats, Miyata, Seiya, Wakita, Hisanobu, Yamaguchi, Toshio, Kikuchi, Akihiro, Umakoshi, Keisuke, Imamura, Taira, Sasaki, Yoichi

Journal:

Inorganic Chemistry

Year:

1997

Language:

english

File:

PDF, 163 KB

english, 1997

35

Theoretical Study of Excited States of Pyrazolate- and Pyridinethiolate-Bridged Dinuclear Platinum(II) Complexes: Relationship between Geometries of Excited States and Phosphorescence Spectra

Saito, Ken, Nakao, Yoshihide, Umakoshi, Keisuke, Sakaki, Shigeyoshi

Journal:

Inorganic Chemistry

Year:

2010

Language:

english

File:

PDF, 2.00 MB

english, 2010

36

Formation of a Novel μ-Tetrasulfido-Bridged Dimer of a Dinuclear Platinum Complex

Umakoshi, Keisuke, Sasaki, Yoichi

Journal:

Inorganic Chemistry

Year:

1997

Language:

english

File:

PDF, 136 KB

english, 1997

37

Oxo-Bridged Linear Diosmium Complexes with Unsymmetric Ligand Environment. Structures of the Diosmium(IV,IV) Complex, [(py)2Cl2(CH3COO)Os(.mu.-O)Os(py)2Cl3] (py = pyridine) and Its Mixed-Valence (III,IV) Analog

Imbe, Yoichi, Umakoshi, Keisuke, Matsunami, Chikako, Sasaki, Yoichi

Journal:

Inorganic Chemistry

Year:

1995

Language:

english

File:

PDF, 860 KB

english, 1995

38

Structural Studies on the Stepwise Chelating Processes of Bidentate 2-(Aminomethyl)pyridine and Tridentate Bis(2-pyridylmethyl)amine toward an Acetate-Bridged Dirhodium(II) Center

Yoshimura, Takashi, Umakoshi, Keisuke, Sasaki, Yoichi

Journal:

Inorganic Chemistry

Year:

2003

Language:

english

File:

PDF, 220 KB

english, 2003

39

Synthesis, Structures, and Redox Properties of Octa(μ 3 -sulfido)hexarhenium(III) Complexes Having Terminal Pyridine Ligands

Yoshimura, Takashi, Umakoshi, Keisuke, Sasaki, Yoichi, Sykes, A. Geoffrey

Journal:

Inorganic Chemistry

Year:

1999

Language:

english

File:

PDF, 139 KB

english, 1999

40

Chelation Processes to an Oxorhenium(V) Center by N,N,N,O-Tetradentate and N,N,O-Tridentate Ligands As Verified by Structural and Mechanistic Studies of Intermediate Species

Botha, J. Mattheus, Umakoshi, Keisuke, Sasaki, Yoichi, Lamprecht, Gert J.

Journal:

Inorganic Chemistry

Year:

1998

Language:

english

File:

PDF, 247 KB

english, 1998

41

Protonation of a Ruthenium Vinylidene Complex with a NO Ligand Leading to Ruthenium Vinyl Complexes

Arikawa, Yasuhiro, Yamasaki, Hayato, Yamaguchi, Mamoru, Umakoshi, Keisuke, Onishi, Masayoshi

Journal:

Organometallics

Year:

2009

Language:

english

File:

PDF, 769 KB

english, 2009

42

Triphenylphosphine Incorporation Reactions of Diynyl Complexes Containing a TpRu(NO) Fragment and Isomerization to Ruthenacyclobuta[ b ]naphthalene

Arikawa, Yasuhiro, Asayama, Taiki, Tanaka, Chie, Tashita, Shin-ya, Tsuji, Misako, Ikeda, Kenta, Umakoshi, Keisuke, Onishi, Masayoshi

Journal:

Organometallics

Year:

2008

Language:

english

File:

PDF, 170 KB

english, 2008

43

N , N , N ‘, N ‘-Tetrakis(2-pyridylmethyl)ethylenediamine and Its Analogues as Hypodentate Ligands. Synthesis and Characterization of the Rhodium(III), Ruthenium(II), and Palladium(II) Complexes

Sokolov, Maxim, Umakoshi, Keisuke, Sasaki, Yoichi

Journal:

Inorganic Chemistry

Year:

2002

Language:

english

File:

PDF, 166 KB

english, 2002

44

Pyrazolato-Bridged Polynuclear Palladium and Platinum Complexes. Synthesis, Structure, and Reactivity

Umakoshi, Keisuke, Yamauchi, Yoko, Nakamiya, Keiko, Kojima, Takashi, Yamasaki, Mikio, Kawano, Hiroyuki, Onishi, Masayoshi

Journal:

Inorganic Chemistry

Year:

2003

Language:

english

File:

PDF, 17 KB

english, 2003

45

Emission and Metal- and Ligand-Centered-Redox Characteristics of the Hexarhenium(III) Clusters trans - and cis -[Re 6 (μ 3 -S) 8 Cl 4 (L) 2 ] 2- , Where L Is a Pyridine Derivative or Pyrazine

Yoshimura, Takashi, Umakoshi, Keisuke, Sasaki, Yoichi, Ishizaka, Shoji, Kim, Haeng-Boo, Kitamura, Noboru

Journal:

Inorganic Chemistry

Year:

2000

Language:

english

File:

PDF, 122 KB

english, 2000

46

Corrigendum

Kabuto, Chizuko, Kabuto, Kuninobu, Sasaki, Yoichi, Nishiyama, Takeshi, Umakoshi, Keisuke

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1993

File:

PDF, 30 KB

1993

47

A europium(III)-N,N,N?,N?-tetrakis(2-pyridylmethyl)-(R)-propylenediamine complex as a new chiral lanthanide NMR shift reagent for aqueous neutral solution

Hazama, Ryoichi, Umakoshi, Keisuke, Kabuto, Chizuko, Kabuto, Kuninobu, Sasaki, Yoichi

Journal:

Chemical Communications

Year:

1996

Language:

english

File:

PDF, 284 KB

english, 1996

48

Unusual hexameric structure in the crystal of sodium propylenediaminetetraacetatoeuropium(III)

Kabuto, Chizuko, Kabuto, Kuninobu, Sasaki, Yoichi, Nishiyama, Takeshi, Umakoshi, Keisuke

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1993

Language:

english

File:

PDF, 326 KB

english, 1993

49

Vinylidene rutheniums with an electrostructurally-flexible NO ligand and their ruthenacyclobutene formation

Yamaguchi, Mamoru, Arikawa, Yasuhiro, Nishimura, Yoshimasa, Umakoshi, Keisuke, Onishi, Masayoshi

Journal:

Chemical Communications

Year:

2009

Language:

english

File:

PDF, 617 KB

english, 2009

50

Reactivity of a nitrosyl ligand on dinuclear ruthenium hydrotris(pyrazolyl)borato complexes toward a NO molecule

Arikawa, Yasuhiro, Ikeda, Ayumi, Matsumoto, Naoki, Umakoshi, Keisuke

Journal:

Dalton Transactions

Year:

2013

Language:

english

File:

PDF, 369 KB

english, 2013