0000000001305280

AUTHOR

Kosuke Nakagawa

showing 4 related works from this author

High proton conduction in a chiral ferromagnetic metal-organic quartz-like framework.

2011

A complex-as-ligand strategy to get a multifunctional molecular material led to a metal-organic framework with the formula (NH(4))(4)[MnCr(2)(ox)(6)]·4H(2)O. Single-crystal X-ray diffraction revealed that the anionic bimetallic coordination network adopts a chiral three-dimensional quartz-like architecture. It hosts ammonium cations and water molecules in functionalized channels. In addition to ferromagnetic ordering below T(C) = 3.0 K related to the host network, the material exhibits a very high proton conductivity of 1.1 × 10(-3) S cm(-1) at room temperature due to the guest molecules.

DiffractionProton010405 organic chemistryChemistryStereochemistryGeneral ChemistryConductivity010402 general chemistryThermal conduction01 natural sciencesBiochemistryCatalysis0104 chemical sciencesMetalCrystallographyColloid and Surface ChemistryFerromagnetismvisual_artvisual_art.visual_art_mediumMoleculeBimetallic stripJournal of the American Chemical Society
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A novel oxalate-based three-dimensional coordination polymer showing magnetic ordering and high proton conductivity

2017

A novel three-dimensional (3D) coordination polymer with the formula (C3N2H5)4[MnCr2(ox)6]·5H2O (2), where ox = oxalate and C3N2H5 = imidazolium cation, is reported. Single crystal X-ray diffraction reveals that this porous coordination polymer adopts a chiral three-dimensional quartz-like architecture, with the guest imidazolium cations and water molecules being hosted in its pores. This novel multifunctional material exhibits both a ferromagnetic ordering at TC = 3.0 K, related to the host MnCr2 network, and high proton conductivity [1.86 × 10−3 S cm−1 at 295 K and 88% relative humidity (RH)] due to the presence of the acidic imidazolium cations and free water molecules. The similarity of…

ProtonChemistryCoordination polymerInorganic chemistry02 engineering and technologyConductivity010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesOxalate0104 chemical sciencesInorganic ChemistryCrystallographychemistry.chemical_compoundFerromagnetismMolecule[CHIM]Chemical SciencesAmmonium0210 nano-technologySingle crystalComputingMilieux_MISCELLANEOUS
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CCDC 1555659: Experimental Crystal Structure Determination

2017

Related Article: Marta Mon, Julia Vallejo, Jorge Pasán, Oscar Fabelo, Cyrille Train, Michel Verdaguer, Shin-ichi Ohkoshi, Hiroko Tokoro, Kosuke Nakagawa, Emilio Pardo|2017|Dalton Trans.|46|15130|doi:10.1039/C7DT03415F

Space GroupCrystallographyCrystal SystemCrystal Structurecatena-(octakis(imidazolium) octakis(mu-oxalato)-tetrakis(oxalato)-tetra-chromium-di-manganese monohydrate)Cell ParametersExperimental 3D Coordinates
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CCDC 1555658: Experimental Crystal Structure Determination

2017

Related Article: Marta Mon, Julia Vallejo, Jorge Pasán, Oscar Fabelo, Cyrille Train, Michel Verdaguer, Shin-ichi Ohkoshi, Hiroko Tokoro, Kosuke Nakagawa, Emilio Pardo|2017|Dalton Trans.|46|15130|doi:10.1039/C7DT03415F

Space GroupCrystallographyCrystal SystemCrystal Structurecatena-(octakis(imidazolium) octakis(mu-oxalato)-tetrakis(oxalato)-tetra-chromium-di-manganese monohydrate)Cell ParametersExperimental 3D Coordinates
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