All Stories

  1. Crystal structure of catena -poly[[tetraaquamanganese(II)]-μ-1,5-dihydroxynaphthalene-2,6-dicarboxylato]

    Article • Acta Crystallographica Section E Crystallographic Communications, January 2026, International Union of Crystallography

    Hitoshi Kumagai

  2. Crystal structure of poly[[aqua(μ2-pyrazine-κ2 N:N′)(μ2-2,3,5,6-tetrachlorobenzene-1,4-dicarboxylato-κ2 O 1:O ...

    Article • Acta Crystallographica Section E Crystallographic Communications, April 2025, International Union of Crystallography

    Hitoshi Kumagai

  3. Crystal structure of catena-poly[[[tetraaquacobalt(II)]-μ2-1,5-dihydroxynaphthalene-2,6-dicarboxylato] dimethylformamide disolvate]

    Article • Acta Crystallographica Section E Crystallographic Communications, February 2025, International Union of Crystallography

    Hitoshi Kumagai

  4. Crystal structure of catena-poly[[diaquadiimidazolecobalt(II)]-μ2-2,3,5,6-tetrabromobenzene-1,4-dicarboxylato]

    Article • Acta Crystallographica Section E Crystallographic Communications, October 2024, International Union of Crystallography

    Hitoshi Kumagai

  5. Crystal structures of 1,1′-bis(carboxymethyl)-4,4′-bipyridinium derivatives

    Article • Acta Crystallographica Section E Crystallographic Communications, June 2024, International Union of Crystallography

    Hitoshi Kumagai

  6. Crystal structure of dilithium biphenyl-4,4′-disulfonate dihydrate

    Article • Acta Crystallographica Section E Crystallographic Communications, January 2024, International Union of Crystallography

    Hitoshi Kumagai

  7. Heterogeneous intercalated metal-organic framework active materials for fast-charging non-aqueous Li-ion capacitors

    Article • Nature Communications, March 2023, Springer Science + Business Media

    Hitoshi Kumagai, Dr Nobuhiro Ogihara

  8. Noncentrosymmetric Supramolecular Hydrogen-Bonded Assemblies Based on Achiral Pyrazine-Bridged Zinc(II) Coordination Polymers with Pyrazinedione Derivatives

    Article • Chemistry, January 2023, MDPI AG

    Hitoshi Kumagai

  9. Metal(II) Ion Dependence of the Structures and Properties of Square-Grid Coordination Polymers of Tetrabromobenzenedicarboxylate and Pyrazine as Bridging Ligands

    Article • Bulletin of the Chemical Society of Japan, May 2021, The Chemical Society of Japan

    Hitoshi Kumagai

  10. Low-Resistance Mechanism of Nanoflake Crystalline Aromatic Dicarboxylates with Selective Defects for Safe and Fast Charging Negative Electrodes

    Article • ACS Nano, February 2021, American Chemical Society (ACS)

    Dr Nobuhiro Ogihara, Hitoshi Kumagai

  11. Solid-State Electrochemistry of Copper(I) Coordination Polymers Containing Tetrafluoroborate Anions

    Article • Inorganic Chemistry, February 2019, American Chemical Society (ACS)

    Hitoshi Kumagai

  12. Hydrogen-Bonding Assembly of Coordination Polymers Showing Reversible Dynamic Solid-State Structural Transformations

    Article • Inorganics, October 2018, MDPI AG

    Hitoshi Kumagai

  13. An Effective Synthetic Process for Pt-ZnO Composite and PtZn Alloy Using Spherical Coordination Polymer Particles as Precursors

    Article • Chemistry Letters, August 2017, The Chemical Society of Japan

    Hitoshi Kumagai

  14. Proton conduction via lattice water molecules in oxalato-bridged lanthanide porous coordination polymers

    Article • Dalton Transactions, January 2016, Royal Society of Chemistry

    Hitoshi Kumagai

  15. An electrochemical ionic liquid membrane reactor for NO x selective separation under excess oxygen conditions

    Article • Journal of Applied Electrochemistry, July 2013, Springer Science + Business Media

    Hitoshi Kumagai

  16. catena-Poly[[[bis(4-pyridinealdoxime-κN1)zinc]-μ-benzene-1,4-dicarboxylato-κ2O1:O4] 4-pyridinealdoxime monosolvate]

    Article • Acta Crystallographica Section E Structure Reports Online, March 2013, International Union of Crystallography

    Hitoshi Kumagai

  17. Long-Range Magnetic Ordering at 5.5 K for Cobalt(II)–Hydroxide Diamond Chains Isolated by 17 Å with α-Phenylcinnamate

    Article • Inorganic Chemistry, February 2013, American Chemical Society (ACS)

    Hitoshi Kumagai

  18. Synthesis, Crystal Structures, and Properties of a Series of Coordination Polymers Employing R4-Terephthalate (R = H, F, Cl, Br) and 4,4′-Bipyridine as Bridging Ligands

    Article • Bulletin of the Chemical Society of Japan, October 2012, The Chemical Society of Japan

    Hitoshi Kumagai

  19. Poly[[dodecaaqua(μ4-benzene-1,4-dicarboxylato)(μ2-4,4′-bipyridine-κ2N:N′)dicerium(III)] bis(benzene-1,4-dicarboxylate)]

    Article • Acta Crystallographica Section E Structure Reports Online, April 2012, International Union of Crystallography

    Hitoshi Kumagai

  20. Bis[μ-3,5-bis(2-pyridyl)pyrazolato]bis(hydrogensulfato)dicopper(II) methanol disolvate

    Article • Acta Crystallographica Section E Structure Reports Online, October 2011, International Union of Crystallography

    Hitoshi Kumagai

  21. 4,4′-Bipyridine-1,1′-diium 2,3,5,6-tetrabromoterephthalate dihydrate

    Article • Acta Crystallographica Section E Structure Reports Online, September 2011, International Union of Crystallography

    Hitoshi Kumagai

  22. Extra-Low-Temperature Oxygen Storage Capacity of CeO2Nanocrystals with Cubic Facets

    Article • Nano Letters, February 2011, American Chemical Society (ACS)

    Hitoshi Kumagai

  23. Synthesis and Characterization of Au-Loaded Core/Shell Mesoporous Silica Spheres Containing Propyl Group in the Shell

    Article • Chemistry of Materials, August 2010, American Chemical Society (ACS)

    Hitoshi Kumagai

  24. Synthesis, Crystal Structures, and Properties of Molecular Squares Displaying Hydrogen and π−π Bonded Networks

    Article • Crystal Growth & Design, April 2009, American Chemical Society (ACS)

    Hitoshi Kumagai

  25. Hydrothermal syntheses, structures and magnetic properties of coordination frameworks of divalent transition metals

    Article • Journal of Materials Science, December 2007, Springer Science + Business Media

    Hitoshi Kumagai

  26. Metal−Organic Frameworks from Copper Dimers withcis- andtrans-1,4-Cyclohexanedicarboxylate andcis,cis-1,3,5-Cyclohexanetricarboxylate

    Article • Inorganic Chemistry, June 2007, American Chemical Society (ACS)

    Dr Kazuyuki Takahashi, Hitoshi Kumagai

  27. Synthesis and Characterization of a Novel Chiral Molecular-Based Ferrimagnet Prepared from a Chiral Nitronyl Nitroxide Radical and Manganese(II) Ion

    Article • Bulletin of the Chemical Society of Japan, January 2007, The Chemical Society of Japan

    Hitoshi Kumagai

  28. Metal−Organic Frameworks from Homometallic Chains of Nickel(II) and 1,4-Cyclohexanedicarboxylate Connectors:  Ferrimagnet−Ferromagnet Transformation

    Article • Inorganic Chemistry, January 2006, American Chemical Society (ACS)

    Hitoshi Kumagai

  29. Hydrothermal Synthesis and Structural Characterization of a Manganese(II) Wire Made Up of Octahedral and Square Pyramidal Mn(II) Ions

    Article • Chemistry Letters, April 2005, The Chemical Society of Japan

    Hitoshi Kumagai

  30. Reversible ferromagnetic–antiferromagnetic transformation upon dehydration–hydration of the nanoporous coordination framework, [Co3(OH)2(C4O4)2]·3H2O

    Article • Chemical Communications, January 2005, Royal Society of Chemistry

    Hitoshi Kumagai

  31. Knotted Network Consisting of 3-Threads and a Zwitterionic One-Dimensional Polymorphs of trans-3-(3-Pyridyl)acrylate of Cobalt and Nickel, MII(C8H6NO2)2(H2O)2

    Article • Inorganic Chemistry, December 2004, American Chemical Society (ACS)

    Hitoshi Kumagai

  32. Metal‐Complex Assemblies Constructed from the Flexible Hinge‐Like Ligand H2bhnq: Structural Versatility and Dynamic Behavior in the Solid State

    Article • Chemistry - A European Journal, June 2004, Wiley

    Hitoshi Kumagai

  33. 2D molecular square grid of Cobalt(II) with tridentate phenylglycinate and mandelate: structure and magnetism

    Article • Journal of Physics and Chemistry of Solids, January 2004, Elsevier

    Hitoshi Kumagai

  34. Module-Based Assembly of Copper(II) Chloranilate Compounds:  Syntheses, Crystal Structures, and Magnetic Properties of {[Cu2(CA)(terpy)2][Cu(CA)2]}n and {[Cu2(CA)(terpy)2(dmso)

    Article • Inorganic Chemistry, December 2003, American Chemical Society (ACS)

    Hitoshi Kumagai

  35. Reversible Guest Exchange and Ferrimagnetism (TC = 60.5 K) in a Porous Cobalt(II)−Hydroxide Layer Structure Pillared with trans-1,4-Cyclohexanedicarboxylate

    Article • Inorganic Chemistry, September 2003, American Chemical Society (ACS)

    Hitoshi Kumagai

  36. Reactions of di-2-pyridylketone oxime in the presence of vanadium(III): crystal structures of the coordination products

    Article • Coordination Chemistry Reviews, February 2003, Elsevier

    Hitoshi Kumagai

  37. Design of Novel Inorganic−Organic Hybrid Materials Based on Iron-Chloranilate Mononuclear Complexes:  Characteristics of Hydrogen-Bond-Supported Layers toward the Intercalation of Guests

    Article • Journal of the American Chemical Society, December 2002, American Chemical Society (ACS)

    Hitoshi Kumagai

  38. Fabrication of infinite two-dimensional sheets of tetragonal metal(II) lattices

    Article • Inorganica Chimica Acta, September 2002, Elsevier

    Hitoshi Kumagai

  39. Self-Organized Metallo-Helicates and -Ladder with 2,2′-Biphenyldicarboxylate (C14H8O4)2-: Synthesis, Crystal Structures, and Magnetic Properties

    Article • Bulletin of the Chemical Society of Japan, June 2002, The Chemical Society of Japan

    Hitoshi Kumagai

  40. Construction of Hydrogen-Bonded and Coordination-Bonded Networks of Cobalt(II) with Pyromellitate:  Synthesis, Structures, and Magnetic Properties

    Article • Inorganic Chemistry, May 2002, American Chemical Society (ACS)

    Hitoshi Kumagai

  41. Hydrothermal synthesis and characterization of a two-dimensional nickel(II) complex containing benzenehexacarboxylic acid (mellitic acid)

    Article • Inorganica Chimica Acta, April 2002, Elsevier

    Hitoshi Kumagai

  42. New Hydrogen Bond-Supported 3-D Molecular Assembly from Polyoxovanadate and Tetramethylbiimidazole

    Article • Inorganic Chemistry, March 2002, American Chemical Society (ACS)

    Hitoshi Kumagai

  43. Preparation, crystal structures and spectroscopic properties of vanadium(iii) complexes with [V–O–V]4+ cores

    Article • Journal of the Chemical Society Dalton Transactions, January 2002, Royal Society of Chemistry

    Hitoshi Kumagai

  44. A Novel Class of Layered Molecular Antiferromagnets

    Article • Molecular Crystals and Liquid Crystals, January 2002, Taylor & Francis

    Hitoshi Kumagai

  45. Synthesis and 57Fe and 151Eu Mössbauer Spectroscopic Studies of New Lanthanoid-iron Complexes

    Article • January 2002, Springer Science + Business Media

    Hitoshi Kumagai

  46. Synthesis and Crystal Structure of One-Dimensional Copper(II) Coordination Polymer Bridged by Pyrazine Derivative

    Article • Molecular Crystals and Liquid Crystals, January 2002, Taylor & Francis

    Hitoshi Kumagai

  47. A Novel Class of Layered Molecular Antiferromagnets

    Article • Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals, January 2002, Taylor & Francis

    Hitoshi Kumagai

  48. Layered Cobalt Hydroxysulfates with Both Rigid and Flexible Organic Pillars:  Synthesis, Structure, Porosity, and Cooperative Magnetism

    Article • Journal of the American Chemical Society, October 2001, American Chemical Society (ACS)

    Hitoshi Kumagai

  49. Synthesis and Magnetic Properties of Chiral Molecule Based Magnets

    Article • Materials Science Forum, August 2001, Trans Tech Publications

    Hitoshi Kumagai

  50. Two Modifications of Layered Cobaltous Terephthalate: Crystal Structures and Magnetic Properties

    Article • Journal of Solid State Chemistry, July 2001, Elsevier

    Hitoshi Kumagai

  51. Crystal structures and magnetic properties of novel coordination polymers with rectangular lattice constructed from pyrazine derivative

    Article • Polyhedron, May 2001, Elsevier

    Hitoshi Kumagai

  52. Synthesis, structure and magnetic properties of bis(hexafluoroacetylacetonato)Mn(II) complex with a novel triplet organic radical, 4-N-tert-butylaminoxyl-4′-nitronylnitroxylbiphenyl

    Article • Polyhedron, May 2001, Elsevier

    Hitoshi Kumagai

  53. The rational syntheses of manganese–chloranilate compounds: crystal structures and magnetic properties

    Article • Polyhedron, May 2001, Elsevier

    Hitoshi Kumagai

  54. Cobalt (II)-hydroxide terephthalate - a metamagnet with a large coercive field

    Article • Synthetic Metals, March 2001, Elsevier

    Hitoshi Kumagai

  55. Synthesis of asymmetric one-dimensional molecular-based magnets

    Article • Synthetic Metals, March 2001, Elsevier

    Hitoshi Kumagai

  56. Hydrothermal synthesis and characterization of a new 3D-network containing the versatile cis,cis-cyclohexane-1,3,5-tricarboxylate

    Article • Journal of Materials Chemistry, January 2001, Royal Society of Chemistry

    Hitoshi Kumagai

  57. Design and Construction of Coordination Polymers Based on the Topological Property of the Multidentate Ligand

    Article • Chemistry Letters, January 2001, The Chemical Society of Japan

    Hitoshi Kumagai

  58. Synthesis, Structure and Magnetic Properties of a Chiral One-Dimensional Molecular-Based Magnet

    Article • Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals, May 2000, Taylor & Francis

    Hitoshi Kumagai

  59. Crystal Structure and Magnetic Property of Cobalt(II) Assembled Compound, {[Co(CA)(bipym)](H2O)2}n (H2CA = chloranilic acid, bipym = 2,2′-bipyrimidine)

    Article • Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals, May 2000, Taylor & Francis

    Hitoshi Kumagai

  60. Iron-Chloranilate Intercalation Compounds: Synthesis, Crystal Structures, and Thermal Properties

    Article • Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals, April 2000, Taylor & Francis

    Hitoshi Kumagai

  61. Novel layered structures constructed from iron–chloranilate compounds

    Article • Coordination Chemistry Reviews, March 2000, Elsevier

    Hitoshi Kumagai

  62. Novel layered structures constructed from metal(II)–chloranilate monomer compounds

    Article • Journal of the Chemical Society Dalton Transactions, January 2000, Royal Society of Chemistry

    Hitoshi Kumagai

  63. Triple hydrogen bond directed crystal engineering of metal assembled complexes: the effect of a bifunctional ligand on supramolecular structure

    Article • CrystEngComm, January 2000, Royal Society of Chemistry

    Hitoshi Kumagai

  64. Synthesis and magnetic properties of a new complex made up of Mn(hfac)2 and a radical with a triplet ground state

    Article • New Journal of Chemistry, January 2000, Royal Society of Chemistry

    Hitoshi Kumagai

  65. Synthesis and Characterization of a Chiral Molecule-Based Metamagnet Made by a Chiral Triplet Organic Radical and Transition Metal Ion

    Article • Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals, September 1999, Taylor & Francis

    Hitoshi Kumagai

  66. Synthesis and151Eu- and57Fe-Mössbauer spectroscopic studies of new europium-iron complexes

    Article • Journal of Radioanalytical and Nuclear Chemistry, February 1999, Springer Science + Business Media

    Hitoshi Kumagai

  67. Mixed ligand copper(II) coordination polymers constructed by Cu-bpm-Cu dimer unit (bpm = 2,2′-bipyrimidine) as a building block. Crystal structures and magnetic properties of [Cu(bpm)(SO4)] (H2O)n, [Cu2(bpm)(suc)0.5(ClO4)2(OH)(H2O)2]n and [Cu(bpm)1.5(s...

    Article • Inorganica Chimica Acta, December 1998, Elsevier

    Hitoshi Kumagai

  68. Novel Intercalation Host System Based on Transition Metal (Fe2+, Co2+, Mn2+)−Chloranilate Coordination Polymers. Single Crystal Structures and Properties

    Article • Chemistry of Materials, November 1998, American Chemical Society (ACS)

    Hitoshi Kumagai

  69. The structural characterization of the novel ribbon sheet, [Cu2Cl2(pyz)]n (pyz = pyrazine)

    Article • Inorganica Chimica Acta, January 1998, Elsevier

    Hitoshi Kumagai

  70. Preparation and Structure of a Novel Tetranuclear Mixed-Valence Vanadium(IV/V) Complexes Having Alkoxo and Oxo Groups

    Article • Chemistry Letters, March 1997, The Chemical Society of Japan

    Hitoshi Kumagai

  71. A Mixed-Valence Tetranuclear Vanadium(IV, V) Complex, [V4O4(μ-OEt)2(μ-O)2(OEt)4(phen)2]

    Article • Acta Crystallographica Section C Crystal Structure Communications, August 1996, International Union of Crystallography

    Hitoshi Kumagai

  72. Hydrogen Bond-Supported Two-Dimensional Layers Of Iron(I?) and Copper(II) Complexes Of Chloranilate. Their Crystal Structures And Magnetic Properties

    Article • Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals, July 1996, Taylor & Francis

    Hitoshi Kumagai

  73. Synthesis and Structure of Novel Vanadium(III) Compounds Having a Cyclic Core

    Article • Chemistry Letters, June 1996, The Chemical Society of Japan

    Hitoshi Kumagai

  74. Rational Design of a Novel Intercalation System. Layer-Gap Control of Crystalline Coordination Polymers, {[Cu(CA)(H2O)m](G)}n (m = 2, G = 2,5-Dimethylpyrazine and Phenazine; m = 1, G = 1,2,3,...

    Article • Inorganic Chemistry, January 1996, American Chemical Society (ACS)

    Hitoshi Kumagai

  75. Crystal structure of a binuclear vanadium(III) complex with a new tripodal ligand, [V2Cl4(tped)(EtOH)2]·2EtOH

    Article • Inorganica Chimica Acta, October 1994, Elsevier

    Hitoshi Kumagai