引地研究室 本文へジャンプ
Publications(1990~; English Articles)

1. Original paper

Kenta Ando, Jun Nakazawa, Shiro Hikichi
Synthesis, Characterization and Aerobic Alcohol Oxidation Catalysis of Palladium(II) Complexes with a Bis(imidazolyl)borate Ligand”
Eur. J. Inorg. Chem., 2603-2608 (2016).

Frédéric Oddon, Yosuke Chiba, Jun Nakazawa, Takehiro Ohta, Takashi Ogura, Shiro Hikichi
“Characterization of Mononuclear Non-heme Iron(III)-Superoxo Complex with a Five-Azole Ligand Set”
Angew. Chem. Int. Ed., 54, 7336-7339 (2015).

Toshiaki Nozawa, Akihiro Yoshida, Shuichi Naito, Shiro Hikichi
Effects of Re addition upon aqueous phase reforming of ethanol over TiO2 supported Rh and Ir catalysts”
Int. J. Hyd. Energy, 40, 4129-4140 (2015).

Tomohiro Tsuruta, Tsubasa Yamazaki, Kazuki Watanabe, Yosuke Chiba, Akihiro Yoshida, Shuichi Naito, Jun Nakazawa, Shiro Hikichi
Mimicking the Active Sites of Non-heme Iron Oxygenases on the Solid Supports of Catalysts: Formation of Immobilized Iron Complexes with Imidazolyl and Carboxylate Ligands”
Chem. Lett.., 44, 144-146 (2015).

Jun Nakazawa, Akinori Yata, Tomoaki Hori, T. Daniel P. Stack, Yoshinori Naruta, Shiro Hikichi
Catalytic Alkane Oxidation by Homogeneous and Silica Supported Cobalt Complex Catalysts with a Triazolyl-group Containing Tetradentate Ligand”
Chem. Lett.., 42, 1197-1199 (2013)..

Atsushi Ikeda, Kazuya Hoshino, Hidehito Komatsuzaki, Minoru Satoh, Jun Nakazawa, Shiro Hikichi
“O2 Activation and External Substrate Oxidation Capability of Co(II)-Semiquinonato Complex”
New J. Chem., 37, 2377-2383 (2013).

Jun Nakazawa, Tomoaki Hori, T. Daniel P. Stack, Shiro Hikichi
Alkane Oxidation by an Immobilized Nickel Complex Catalyst: Structural and Reactivity Differences Induced by Surface Ligand Density on Mesoporous Silica”
Chem. Asian J., 8, 1191-1199 (2013).

Hidehito Komatsuzaki, Akihiko Shiota, Shogo Hazawa, Muneaki Ito, Noriko Miyamura, Nahomi Miki, Yoichi Takano, Jun Nakazawa, Akiko Inagaki, Munetaka Akita, Shiro Hikichi
Manganese(II) semiquinonato and manganese(III) catecholato complexes with tridentate ligand: Modeling the substrate-binding state of manganese-dependent catechol dioxygenases and reactivity with molecular oxygen”
Chem. Asian J., 8, 1115-1119 (2013).

Jun Nakazawa, Shota Terada, Masaki Yamada, Shiro Hikichi
Structural Characterization and Oxidation Reactivity of a Nickel(II) Acylperoxo Complex”
J. Am. Chem. Soc.., 135, 6010-6013 (2013).

Takahiro Akashi, Jun Nakazawa, Shiro Hikichi
Iron complex immobilized catalyst based on β-ketiminate ligand: Alkene oxygenation activity depending on the morphology of silica support and the structures of base additives”
J. Mol. Catal. A: Chem., 371, 42-47 (2013).

Shiro Hikichi, Kento Hanaue, Takako Fujimura, Hideho Okuda, Jun Nakazawa, Yoshiko Ohzu, Chiho Kobayashi, Munetaka Akita
Characterization of Nickel(II)-Acylperoxo Species Relevant to Catalytic Alkane Hydroxylation by Nickel Complex with mCPBA”
Dalton Trans., 42, 3346-3356 (2013).

Jun Nakazawa,
Hiroyuki Ogiwara, Yusuke Kashiwazaki, Akiyoshi Ishii, Naoki Imamura, Yuya Samejima, Shiro Hikichi
“Dioxygen Activation and Substrate Oxygenation by a p-Nitrothiophenolatonickel Complex: Unique Effects of an Acetonitrile Solvent and the p-Nitro Group of the Ligand”
Inorg. Chem., 50, 9933-9935 (2011).

Shiro Hikichi
, Koyu Fujita, Yoshitaka Manabe, Munetaka Akita, Jun Nakazawa, Hidehito Komatsuzaki
“Coordination property of organoborate ligands: Steric hindrance around distal boron center direct the conformation of dialkylbis(imidazolyl)borate scaffold”
Eur. J. Inorg. Chem., 5529-5537 (2010).

Shiro Hikichi, Chiho Kobayashi, Michito Yoshizawa, Munetaka Akita
“Tuning the Stability and Reactivity of Metal-bound Alkylperoxide by Remote Site Substitution of the Ligand”
Chem. Asian J., 5, 2086-2092 (2010).

Akihiro Yoshida, Yoshinao Nakagawa, Kazuhiro Uehara, Shiro Hikichi, Noritaka Mizuno
“Inorganic Cryptand: Size-Selective Strong Metallic Cation Encapsulation by a Disilicoeicosatungstate (Si2W20) Polyoxometalate”
Angew. Chem. Int. Ed., 48, 7055-7058 (2009).

Koyu Fujita, Munetaka Akita, Shiro Hikichi
“Acetoxybis(imidazolyl)methylborate [B(ImN-Me)2(OC(=O)Me)Me]-: Carboxylation of borane moiety of imidazolyl-based scorpionate”
Inorg. Chim. Acta, 362, 4472-4479 (2009).

Shiro Hikichi, Mami Kaneko, Yasuyuki Miyoshi, Noritaka Mizuno, Koyu Fujita, Munetaka Akita
“Design, Synthesis, and Catalysis of Bio-inspired Immobilized Metallocomplex Catalyst”
Top. Catal., 52, 845-851 (2009).

Shiro Hikichi, Hideho Okuda, Yoshiko Ohzu, Munetaka Akita
“Structural Characterization and Oxidation Activity of a Nickel(II) Alkylperoxo Complex”
Angew. Chem. Int. Ed., 48, 188-191 (2009).

Sayaka Uchida, Shiro Hikichi, Takeo Akatsuka, Toshiyuki Tanaka, Ryosuke Kawamoto, Aldes Lesbani, Yoshinao Nakagawa, Kazuhiro Uehara, Noritaka Mizuno
“Preparation of Monodispersed Nano-particles by Electrostatic Assembly of Keggin-type Polyoxometalates and tacn-Based Transition Metal Complexes”
Chem. Mater., 19, 4694-4701 (2007).

Akihiro Yoshida, Shiro Hikichi, Noritaka Mizuno
“Baeyer-Villiger Oxidation and C-C Bond Formation Reactions Catalyzed by Disilicoeicosatungstates”
Stud. Surf. Sci. Catal., 172, 205-208 (2007).

Akihiro Yoshida, Shiro Hikichi, Noritaka Mizuno
“Acid-Base Catalyses by Dimeric Disilicoicosatungstates and Divacant γ-Keggin-type Silicodecatungstate Parent: Reactivity of the Polyoxometalate Compounds Controlled by Step-by-step Protonation of Lacunary W=O Sites”
J. Organomet. Chem., 692, 455-459 (2007).

Keigo Kamata, Miyuki Kotani, Kazuya Yamaguchi, Shiro Hikichi, Noritaka Mizuno
“Olefin Epoxidation with Hydrogen Peroxide Catalyzed by Lacunary Polyoxometalate [γ-SiW10O34(H2O)2]4-
Chem. -Eur. J., 13, 639-648 (2007).

Kazuhiro Uehara, Hideaki Nakao, Ryosuke Kawamoto, Shiro Hikichi, Noritaka Mizuno
“2D-Grid Layered Pd-Based Cationic Infinite Coordination Polymer/Polyoxometalate Crystal with Hydrophilic Sorption”
Inorg. Chem., 45, 9448-9453 (2006).

Udai P. Singh, Asish K. Sharma, Shiro Hikichi, Hidehito Komatsuzaki, Yoshihiko Moro-oka, Munetaka Akita
“Hydrogen bonding interaction between imidazolyl N-H group and peroxide: Stabilization of Mn(III)-peroxo complex TpiPr2Mn(η2-O2)(imMeH) (imMeH = 2-methylimidazole)”
Inorg. Chim. Acta, 359, 4407-4411 (2006).

Akihiro Yoshida, Masayuki Yoshimura, Kazuhiro Uehara, Shiro Hikichi, Noritaka Mizuno
“Formation of S-Shaped Disilicoeicosatungstate (W20) and the Efficient Baeyer-Villiger Oxidation with Hydrogen Peroxide”
Angew. Chem. Int. Ed., 45, 1956-1960 (2006).

Yuya Goto, Keigo Kamata, Kazuya Yamaguchi, Kazuhiro Uehara, Shiro Hikichi, Noritaka Mizuno
“Synthesis, Structural Characterization, and Catalytic Performance of Dititanium-substituted γ-Keggin Silicotungstate”
Inorg. Chem., 45, 2347-2356 (2006).

Kazuhiro Uehara, Shiro Hikichi, Akiko Inagaki, Munetaka Akita
“Xenophilic Complexes Bearing a TpR Ligand, TpRM-M'Ln [TpR = TpiPr2, Tp# (TpMe2,4-Br); M= Ni, Co, Fe, Mn; M'Ln= Co(CO)4, Co(CO)3(PPh3), RuCp(CO)2]: The Two Metal Centers are Held Together not by Covalent Interaction but by Electrostatic Attraction.”
Chem. -Eur. J., 11, 2788-2809 (2005).

Sayaka Uchida, Ryosuke Kawamoto, Takeo Akatsuka, Shiro Hikichi, Noritaka Mizuno
“Structures and Sorption Properties of Ionic Crystals of Macrocation-Dawson-type Polyoxometalates with Different Charges”
Chem. Mater., 17, 1367-1375 (2005).

Yoshiaki Takahashi, Mariko Hashimoto, Shiro Hikichi, Yoshihiko Moro-oka, Munetaka Akita
“Oxygenation of a Low Valent Rhodium Complex, TpiPr2Rh(dppe): Sequential Conversion of Molecular Oxygen into Peroxo and Hydroperoxo Complexes and Characterization of the Peroxo Species”
Inorg. Chim. Acta, 357, 1711-1724 (2004).

Yoshiaki Takahashi, Shiro Hikichi, Yoshihiko Moro-oka, Munetaka Akita
“Oxygenation of a Series of Cationic Aquoruthenium Complexes, TpiPr2Ru(OH2)nL3-nCF3SO3(THF)x, Leading to Mono- and Dinuclear Aquo-hydroxo Complexes Supported by Unique Hydrogen Bonding Networks”
Polyhedron, 23, 225-234 (2004).

Yan Xu, Wei Fan, Naotaka Chino, Kazuhiro Uehara, Shirou Hikichi, Noritaka Mizuno, Masaru Ogura, Tatsuya Okubo
“The Hydrothermal Synthesis and Crystal Structure of (H2O)[Ge5O10] and [(CH3)4N][Ge10O20OH], Two Novel Porous Germanates”
Chem. Lett., 33, 74-75 (2004).

Keigo Kamata, Kazuya Yamaguchi, Shiro Hikichi, Noritaka Mizuno
“[{W(=O)(O2)2(H2O)}2(μ-O)]2--Catalyzed Epoxidation of Allylic Alcohols in Water with High Selectivity and Utilization of Hydrogen Peroxide”
Adv. Synth. Catal., 345, 1193-1196 (2003).

Ken-ichiro Sugawara, Shiro Hikichi, Munetaka Akita
“A Peroxochromium Complex, TpiPr2Cr(O2)2, Obtained by Oxidative Dehydrative Condensation Between a Dihydroxochromium Complex and H2O2 [TpiPr2 = hydrotris(3,5-diisopropylpyrazolyl)borato]”
Dalton Trans., 4346-4355 (2003).

Masato Kujime, Shiro Hikichi, Munetaka Akita
“Interaction of Hyddroperoxopalladium Complexes, (TpR)(py)Pd-OOH, with Hydroxonickel and -cobalt Complexes, [(μ-OH)(MTpR’)]2 (M = Ni, Co), Leading to Oxidative Dehyddrogenation of the Saturated Hydrocarbyl Moiety in the Ancillary Ligand (TpiPr2)”
Dalton Trans., 3506-3515 (2003).

Masato Kujime, Shiro Hikichi, Munetaka Akita
“Enolato-cobalt and -nickel Complexes Bearing TpiPr2 Ligand, [TpiPr2M(XCHY)]n [TpiPr2 = Hydrotris(3,5-diisopropylpyrazolyl)borato; n= 1, 2], Obtained from Hydroxometal Complexes, (μ-OH)2(MTpiPr2)2, and Active Methylene Compounds, CH2XY”
Inorg. Chim. Acta, 350, 163-174 (2003).

Masato Kujime, Shiro Hikichi, Munetaka Akita
“Conversion of a Hydroperoxo Complex, (TpiPr2)(py)Pd-OOH, into a Cyclic Alkylperoxo Complex Catalyzed by Cu(II) Species [TpiPr2: Hydrotris(3,5-diisopropylpyrazolyl)borato]”
Chem. Lett.., 32, 486-487 (2003).

Keigo Kamata, Koji Yonehara, Yasutaka Sumida, Kazuya Yamaguchi, Shiro Hikichi, Noritaka Mizuno
“Efficient Epoxidation of Olefins with >99% Selectivity and Use of Hydrogen Peroxide”
Science, 300, 964-966 (2003).

Ken-ichiro Sugawara, Shiro Hikichi, Munetaka Akita
“Di- and Trivalent Chlorochromium Complexes Bearing Hydrotris(3,5-diisopropylpyrazolyl)borato Ligand (TpiPr2), TpiPr2CrCln(L) (n= 1,2) and [TpiPr2Cr(μ-Cl)]2: Flexible Coordination Behavior of the TpiPr2 Ligand and Reduction Features of Cr(II) Species”
J. Chem. Soc., Dalton Trans., 4514-4524 (2002).

Kazuhiro Uehara, Shiro Hikichi, Munetaka Akita
“Reactivity Control of a Dinuclear Xenophilic Species, Tp#Ni-RuCp(CO)2, via Spin Crossover across a Metal-metal Bond [Tp#: Hydrotris(3,5-dimethyl-4-bromopyrazolyl)borato]”
Chem. Lett., 31, 1198-1199 (2002).

Taichi Miyaji, Masato Kujime, Shiro Hikichi, Yoshihiko Moro-oka, Munetaka Akita
“Synthesis and Characterization of a Series of Hydroperoxo-, Alkylperoxo- and μ-Peroxo-palladium Complexes Containing Hydrotris(3,5-diisopropylpyrazolyl)borato Ligand (TpiPr2), (TpiPr2)(py)Pd-OO-X [X= H, t-Bu, Pd(TpiPr2)(py)] and (TpiPr2)(py)Pd-(μ-η12-OO)-PdTpiPr2
Inorg. Chem., 41, 5286-5295 (2002).

Kazuhiro Uehara, Shiro Hikichi, Munetaka Akita
“Highly Labile Cationic Tris-acetonitrile complexes, [TpRM(NCMe)3]OTf (M= Ni, Co; TpR: Hydrotrispyrazolylborato, R= Ph,Me and iPr2): Versatile Precursors for TpR-containing Nickel and Cobalt Complexes”
J. Chem. Soc., Dalton Trans., 3529-3538 (2002).

Shin-ichi Yoshimitsu, Shiro Hikichi, Munetaka Akita
“Synthesis and Characterization of Coordinatively Unsaturated Alkynyl- and Aryl-cobalt Complexes with 15 Valence Electrons, TpiPr2Co-R, Bearing Hydrotris(3,5-diisopropylpyrazolyl)borato Ligand (TpiPr2)”
Organometallics, 21, 3762-3773 (2002).

Shiro Hikichi, Yasuyuki Sasakura, Michito Yoshizawa, Yoshiko Ohzu, Yoshihiko Moro-oka, Munetaka Akita
“Selective Synthesis, Characterization, and Configurational Flexibility of the Coordinatively Unsaturated Metal Center of Half-sandwich Type Complexes with the Less-Hindered Hydrotris(3,5-dimethyl-4-X-1-pyrazolyl)borate Ligands [TpMe2,XMII2-O,O-L)] (M = Ni, Co; L = NO3, OAc; X = Me, H, Br)”
Bull. Chem. Soc. Jpn., 75, 1255-1262 (2002).

Shiro Hikichi, Michito Yoshizawa, Yasuyuki Sasakura, Yoshiko Ohzu, Yoshihiko Moro-oka, Munetaka Akita
“Structural Characterization and Intramolecular Aliphatic C-H Oxidation Ability of MIII(μ-O)2MIII Complexes of Ni and Co with the Hydrotris(3,5-dialkyl-4-X-pyrazolyl)borate Ligands TpMe2,X (X = Me, H, Br) and TpiPr2
Chem. -Eur. J., 7, 5011-5028 (2001).

Ken-ichiro Sugawara, Shiro Hikichi, Munetaka Akita
“Dichloromethane Activation by Chlorochromium(II) Complexes with TpiPr2: Generation of an Electrophilic Cr-Methylene Species without the Action of an External Cl-Abstraction Reagent”
Chem. Lett., 30, 1094-1095 (2001).

Kazuhiro Uehara, Shiro Hikichi, Munetaka Akita
“Rational Synthesis and Reversible Metal-metal Bond Scission of Heterobimetallic Xenophilic Complexes Containing an Unsupported, Polar Metal-metal Bond, TpiPr2M-Co(CO)3L (M= Ni, Co, Fe, Mn; L= CO, PPh3)”
Organometallics, 20, 5002-5004 (2001).

Masato Kujime, Shiro Hikichi, Munetaka Akita
“N/O- and C-Bound (Enolato)palladium Complexes with Hydrotris(pyrazolyl)borato Ligands (TpR: R = iPr2, Me2) Obtained via Dehydrative Condensation between the Hydroxo Complexes TpRPd(Py)OH and Active Methylene Compounds: Factors Determining the Isomer Distribution and Dimerization of Cyano Compounds”
Organometallics, 20, 4049-4060 (2001).

Nobuhiko Shirasawa, Trieu Thi Nguyet, Shiro Hikichi, Yoshihiko Moro-oka, Munetaka Akita
“Tetrahedral, Highly Coordinatively Unsaturated 14e (Fe) and 15e (Co) Hydrocarbyl Complexes Bearing Hydrotris(pyrazolyl)borato Ligands (TpR’), TpR’M-R (M = Fe, Co, Ni)”
Organometallics, 20, 3582-3598 (2001).

Munetaka Akita, Yoshiaki Takahashi, Shiro Hikichi, Yoshihiko Moro-oka
“Synthesis and Dehydrative Condensation of Monomeric Hydroxoruthenium Complexes with Hydrotris(3,5-diisopropylpyrazolyl)borate Ligand, TpiPr2Ru(L2)(OH) (L2 = dppe, bipy)”
Inorg. Chem., 40, 169-172 (2001).

Udai P. Singh, Rajender Singh, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Characterization of a dinuclear Mn(II) tri(μ-carboxylato) complex with the hindered hydrotris(3,5-diisopropyl-1-pyrazolyl)borate (= TpiPr2) ligand: intramolecular hydrogen bonding interaction between the protonated TpiPr2 and Mn-coordinating carboxylate ligands”
Inorg. Chim. Acta, 310, 273-278 (2000).

Munetaka Akita, Mariko Hashimoto, Shiro Hikichi, Yoshihiko Moro-oka
“Synthesis and Structural Comparison of TpiPr2Rh[cis-1,2-bis(diphenylphosphino)ethene]: Factors Determining Hapticity (κ2 vs. κ3) of the TpiPr2 ligand in TpiPr2Rh(diphosphine) Complexes”
Organometallics, 19, 3744-3747 (2000).

Munetaka Akita, Taichi Miyaji, Nobuyuki Muroga, Cordula Mock-Knoblauch, Shiro Hikichi, Waldemar Adam, and Yoshihiko Moro-oka
“Synthesis and Dehydrative Condensation of Square-Planar Mono- and Dinuclear Hydroxopalladium Complexes with the Hydrotris(3,5-diisopropylpyrazolyl)borato Ligand (TpiPr2), TpiPr2(Py)Pd-OH, and (μ-OH)2{PdTpiPr2(H2O)}2
Inorg. Chem., 39, 2096-2102 (2000).

Koyu Fujita, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Synthesis and structural characterization of a new-class of organoborato ligands containing imidazolyl functional groups [MeB(ImN-Me)2(X)]-
J. Chem. Soc., Dalton Trans., 1255-1260 (2000).

De-qiang Ma, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“An entry to half-sandwich complexes of first row transition metals (Ni, Co, Mn) containing the Klaui tripodal ligand, LOMe: synthesis and crystal structures of oligomeric, [LOMeM(μ-X)(L)]n (n = 2, 4), and monomeric complexes, LOMeM(L2)(X)”
J. Chem. Soc., Dalton Trans., 1123-1134 (2000).

Tamako Ogihara, Shiro Hikichi, Munetaka Akita, Takeshi Uchida, Teizo Kitagawa, Yoshihiko Moro-oka
“An approach to the O2 activating mononuclear non-heme Fe enzymes: structural characterization of Fe(II)-acetato complex and formation of alkylperoxoiron(III) species with the highly hindered hydrotris(3-tert-butyl-5-isopropyl-1-pyrazolyl)borate”
Inorg. Chim. Acta, 297, 162-170 (2000).

Koyu Fujita, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Novel monoanionic tripodal ligands: methylbis(1-methylimidazol-2-yl)(pyrazol-1-yl)borate (= MeB(ImN-Me)2(PzR)]-). Synthesis and structural characterization of their nickel complexes and carboxylate shift from nickel to boron”
J. Chem. Soc., Dalton Trans., 117-120 (2000).

Yoshiaki Takahashi, Mariko Hashimoto, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Conversion of Molecular Oxygen into a Hydroperoxo Species by Ring-Opening Protonation of a Cyclic η2-Peroxide Intermediate: Characterization of the η2-Peroxide and Hydroperoxo Complexes”
Angew. Chem. Int. Ed., 38, 3074-3076 (1999).

Shiro Hikichi, Michito Yoshizawa, Yasuyuki Sasakura, Yoshihiko Moro-oka, Munetaka Akita
“Oxygenation of Saturated Hydrocarbyl Groups in the Dinuclear Ni(III) Bis(μ-oxo) Complexes with the Hydrotris(pyrazolyl)borate Ligands TpR (R = Me3 and Pri2)”
Chem. Lett., 28, 979-980 (1999).

Munetaka Akita, Taichi Miyaji, Shiro Hikichi, Yoshihiko Moro-oka
“A Transition Metal-Hydroperoxo Complex Stabilized by Hydrogen-Bonding Interaction: The First Example of a Hydroperoxopalladium Species Characterized by X-Ray Crystallography, (κ2-TpiPr)Pd(PPh3)(OOH) [TpiPr = hydrotris(3,5-diisopropylpyrazolyl)borato]”
Chem. Lett., 28, 813-814 (1999).

Yoshiaki Takahashi, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Oxidative C(sp3)-C(sp3) bond cleavage reaction of an isopropyl group to give an acetyl group via O2-treatment of a labile cationic ruthenium species, [TpiPrRu(dppene)(OH2)]+
Chem. Commun., 1491-1492 (1999).

Keisuke Ohta, Mariko Hashimoto, Yoshiaki Takahashi, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Synthesis of a Series of Rhodium Complexes, TpiPrRhIL2 and TpiPrRhIII(X)(Y)(MeCN), with Hydrotris(3,5-diisopropyl-pyrazolyl)borato Ligand (TpiPr) from the Versatile Precursor, (κ3-TpiPr)Rh(coe)(MeCN), and Dependence of the κ23 Interconversion Rate of the TpiPr Ligand on the Chelate Ring Size”
Organometallics, 18, 3234-3240 (1999).

Yoshiaki Takahashi, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“A Coordinatively Unsaturated Species with Agostic C-H Interaction, [κ4-TpiPrRu(dppe)]OSO2CF3, and its Addition Reaction”
Organometallics, 18, 2571-2573 (1999).

Masahiro Kosugi, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“The first evidence for activation of exogenous O2 on a vanadium(IV) center: Synthesis and characterization of a peroxo vanadium(V) complex with hydrotris(3,5-diisopropyl-1-pyrazolyl)borate”
J. Chem. Soc., Dalton Trans., 1369-1372 (1999).

Masahiro Kosugi, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Inter- and Intramolecular Hydrogen-bonding Interaction of Hydroxo Groups and Steric Effect of Alkyl Substituents on Pyrazolyl Rings in TpR Ligands: Synthesis and Structural Characterization of Chloro- and Hydroxo Complexes of VO2+ with TpPri2 and TpMe2 Ligands”
Inorg. Chem., 38, 2567-2578 (1999).

Munetaka Akita, De-qiang Ma, Shiro Hikichi, Yoshihiko Moro-oka
“Synthesis and crystal structures of mononuclear half-sandwich Ni and Co complexes containing the Klaui's tripodal ligand, [κ3-(η5-C5H5)Co{P(=O)(OCH3)2}3]M(κ2-NO3)(L) (M= Ni, Co)”
J. Chem. Soc., Dalton Trans., 987-996 (1999).

Nobuhiko Shirasawa, Munetaka Akita, Shiro Hikichi, Yoshihiko Moro-oka
“Thermally stable coordinatively unsaturated alkyl complexes resistant to β-hydride elimination: TpiPrM-CH2CH3 (M = Co, Fe)”
Chem. Commun., 417-418 (1999).

Hidehito Komatsuzaki, Naoko Sakamoto, Minoru Satoh, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“The First Synthesis and Structural Characterization of Alkylperoxo Complex of Mn(II)”
Inorg. Chem., 37, 6554-6555 (1998).

Yoshiaki Takahashi, Munetaka Akita, Shiro Hikichi, Yoshihiko Moro-oka
“Two Isomeric Structures of Hydridoruthenium Complexes Supported by Hydrotrispyrazolylborates, TpRRu(H)(1,5-cyclooctadiene): An Octahedral Structure with Additional 3-Center-2-Electron Ru-H-B Interaction Is More Stable than a Square-Pyramidal Structure with a κ2-TpR Ligand”
Organometallics, 17, 4884-4888 (1998).

Shiro Hikichi, Michito Yoshizawa, Yasuyuki Sasakura, Munetaka Akita, Yoshihiko Moro-oka
“First Synthesis and Structural Characterization of Dinuclear M(III) Bis(μ-oxo) Complexes of Nickel and Cobalt with Hydrotris(pyrazolyl)borate Ligand”.
J. Am. Chem. Soc., 120, 10567-10568 (1998).

Hidehito Komatsuzaki, Shinobu Ichikawa, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Characterization of a Dinuclear Mn(II) (μ-Hydroxo)(μ-Pyrazolato) Complex and Hydrolytic Equilibrium of the Bridging Pyrazolate Ligand”
Inorg. Chem., 37, 3652-3656 (1998).

Yoshiaki Takahashi, Munetaka Akita, Shiro Hikichi, Yoshihiko Moro-oka
“Synthesis of Various Cationic Ruthenium-Aqua Complexes with the Hydrotris(3,5-diisopropylpyrazolyl)borate Ligand, TpiPrRu(OH2)n(L)3-n(CF3SO3)(THF)x, and Their Structures Supported by Hydrogen-Bonding Networks”
Inorg. Chem., 37, 3186-3194 (1998).

Tamako Ogihara, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Synthesis, Structural Characterization, and Extradiol Oxygenation of Iron-Catecholato Complexes with Hydrotris(pyrazolyl)borate Ligands”
Inorg. Chem., 37, 2614-2615 (1998).

Shiro Hikichi, Hidehito Komatsuzaki, Munetaka Akita, Yoshihiko Moro-oka
“Aliphatic C-H Bond Oxygenation by the CoIIOOX Species with the Hindered Hydrotris(pyrazolyl)borate Ligand (X = Co(II), Alkyl, H)”
J. Am. Chem. Soc., 120, 4699-4710 (1998).

Munetaka Akita, Taichi Miyaji, Shiro Hikichi, Yoshihiko Moro-oka
“Systematic synthesis of a series of hydroperoxo- alkylperoxo- and μ-peroxo-palladium complexes supported by the hydrotris(3,5-diisopropylpyrazolyl)borate ligand (TpiPr), TpiPrPd(py)-OOX [X = PdTpiPr(py), H, But], via dehydrative condensation of a hydroxo complex, TpiPrPd(py)-OH”
Chem. Commun., 1005-1006 (1998).

Munetaka Akita, Nobuhiko Shirasawa, Shiro Hikichi, Yoshihiko Moro-oka
“14e η1-Hydrocarbyliron complexes supported by hydrotris(3,5-diisopropylpyrazolyl)borate: the allyl complex prefers a highly coordinatively unsaturated 14e η1-structure to a 16e η3-structure”
Chem. Commun., 973-974 (1998).

Hidehito Komatsuzaki, Yuichi Nagasu, Kantaro Suzuki, Takao Shibasaki, Minoru Satoh, Fujio Ebina, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“Dioxygen activation by a novel manganese(II) thiolate complex with hydrotris(3,5-diisopropylpyrazol-1-yl)borate ligand”
J. Chem. Soc., Dalton Trans., 511-512 (1998).

Munetaka Akita, Keisuke Ohta, Yoshiaki Takahashi, Shiro Hikichi, Yoshihiko Moro-oka
“Synthesis and Structure Determination of Rh-diene Complexes with the Hydridotris(3,5-diisopropylpyrazolyl)borate Ligand, TpiPrRh(diene) (diene = cod, nbd): Dependence of the ν(B-H) Values on the Hapticity of the TpiPr Ligand (κ2 vs κ3)”
Organometallics, 16, 4121-4128 (1997).

Shiro Hikichi, Tamako Ogihara, Kiyoshi Fujisawa, Nobumasa Kitajima, Munetaka Akita, Yoshihiko Moro-oka
“Synthesis and Characterization of the Benzoylformato Ferrous Complexes with the Hindered Tris(pyrazolyl)borate Ligand as a Structural Model for Mononuclear Non-Heme Iron Enzymes”
Inorg. Chem., 36, 4539-4547 (1997).

Shiro Hikichi, Hidehito Komatsuzaki, Nobumasa Kitajima, Munetaka Akita, Masahiro Mukai, Teizo Kitagawa, Yoshihiko Moro-oka
“Characterization of a μ-η22-Peroxo Dinuclear Cobalt(II) Complex”
Inorg. Chem., 36, 266-267 (1997).

Nobumasa Kitajima, Hidehito Komatsuzaki, Shiro Hikichi, Masahisa Osawa, Yoshihiko Moro-oka
“A Monomeric Side-On Peroxo Manganese(III) Complex: Mn(O2)(3,5-iPr2pzH)(HB(3,5-iPr2pz)3)”
J. Am. Chem. Soc., 116, 11596-11597 (1994).

Shiro Hikichi, Masako Tanaka, Yoshihiko Moro-oka, Nobumasa Kitajima
“Reaction of Hydroxo Complexes of Divalent Metal Ions with Amide”
J. Chem. Soc., Chem. Commun., 1737-1738 (1994).

Nobumasa Kitajima, Kiyoshi Fujisawa, Shiro Hikichi, Yoshihiko Moro-oka
“Formation of (μ-Hydroxo)(μ-azido) Dinuclear Copper Complex from μ-η22-Peroxo Complex”
J. Am. Chem. Soc., 115, 7874-7875 (1993).

Nobumasa Kitajima, Shiro Hikichi, Masako Tanaka, Yoshihiko Moro-oka
“Fixation of Atmospheric CO2 by a Series of Hydroxo Complexes of Divalent Metal Ions and the Implication for the Catalytic Role of Metal Ion in Carbonic Anhydrase. Synthesis, Characterization, and Molecular Structure of [LM(OH)]n (n = 1 or 2) and LM(μ-CO3)ML (M(II) = Mn, Fe, Co, Ni, Cu, Zn; L = HB(3,5-iPr2pz)3)”
J. Am. Chem. Soc., 115, 5496-5508 (1993).

Shiro Hikichi, Masako Tanaka, Yoshihiko Moro-oka, Nobumasa Kitajima
“Phosphate Ester Cleavage with a Zinc Hydroxo Complex. Formation and Crystal Structure of a Dinuclear Zinc Complex Bridged with a Phosphate Monoester”
J. Chem. Soc., Chem. Commun., 814-815 (1992).

Nobumasa Kitajima, Kiyoshi Fujisawa, Takayuki Koda, Shiro Hikichi, Yoshihiko Moro-oka
“Fixation of Atmospheric CO2 by a Copper(II) Complex”
J. Chem. Soc., Chem. Commun., 1357-1358 (1990).


2. Reviews

Noritaka Mizuno, Shiro Hikichi, Kazuya Yamaguchi, Sayaka Uchida, Yoshinao Nakagawa, Kazuhiro Uehara, Keigo Kamata
“Molecular design of selective oxidation catalyst with polyoxometalate”
Catal Today, 117, 32-36 (2006).

Munetaka Akita, Shiro Hikichi
“Inorganic Chemistry Based on Tp Ligands - From Dioxygen Complexes to Organometallic Systems ?“
Bull. Chem. Soc. Jpn., 75, 1657-1679 (2002).

Shiro Hikichi, Munetaka Akita, Yoshihiko Moro-oka
“New aspects of the cobalt-dioxygen complex chemistry opened by hydrotris(pyrazoly)borate ligands (= TpR): Unique properties of TpRCo-dioxygen complexes”
Coord. Chem. Rev., 198, 61-87 (2000).

Munetaka Akita, Kiyoshi Fujisawa, Shiro Hikichi, Yoshihiko Moro-oka
“Chemistry of μ-η22-Peroxo Dimetal Complexes: A Bioinorganic Model Triggers a New Trend of Transition Metal Peroxo Species”
Res. Chem. Intermed., 24, 291-307 (1998).