title: High Proton Conductivity of Zinc Oxalate Coordination Polymers Mediated by a Hydrogen Bond with Pyridinium.
abstract: A novel metal-organic framework, (Hpy)2[Zn2(ox)3]·nH2O (n = 0, 1), having a pyridinium cation, was newly synthesized, and the crystal structures were determined. The hydrated compound shows a high proton conductivity of 2.2 × 10(-3) S cm(-1) at 298 K and 98% relative humidity. Single crystal XRD analysis revealed a rotational displacement factor for the hydrated pyridinium ring and elongated water site that is thought to cause the high proton conductivity.
authors.affiliation: Division of Chemistry and Biochemistry, Faculty of Engineering, Kyushu University , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.|Center for Molecular Systems, Faculty of Engineering, Kyushu University , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.|JST-PRESTO , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Teppei
authors.initials: T
authors.lastname: Yamada
authors.affiliation: Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency , Tokai-Mura, Ibaraki 319-1195, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Nankawa