Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
Dielectric Properties of One-dimensional Water Clusters Confined in the Porous Crystal, [Co3(2,4-pydc)23-OH)2]·9H2O (2,4-pydc: pyridine-2,4-dicarboxylate)
Biao ZhouAkiko KobayashiHayao Kobayashi
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2013 Volume 42 Issue 10 Pages 1131-1133

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Abstract

The dielectric properties of the one-dimensional (1D) water clusters confined in the porous crystal, [Co3(2,4-pydc)23-OH)2]·9H2O, were examined. The dielectric constant (ε′) decreased abruptly below 200 K, where the first-order phase transition occurred. The results of molecular dynamics simulations suggested freezing of the molecular motion of the guest water molecules, forming 1D water clusters at 200 K. ε′ (10 kHz) increased sharply above 300 K and became as high as 500 at 383 K. The hysteresis loop observed at 340 K indicated the antiferroelectric state of the guest water system.

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© 2013 The Chemical Society of Japan
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