Structural and dynamical studies on protonic conductor K3H(SeO4)2
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چکیده
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Anelastic and Dielectric Relaxation Measurements in the Protonic Conductor Ba3(Ca1.18Nb1.82)O9-
In order to study the local proton motion in complex perovskite-type protonic conductors anelastic and dielectric relaxation measurements have been carried out at the compound Ba3(Ca1.18Nb182) 09.&. Both techniques show spectra depending on the proton concentration. From the dielectric measurements an activation energy of E, = 0.5 eV for the local reorientation of a proton-related defect can be...
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Characterization of the Dynamics in the Protonic Conductor CsH2PO4 by O Solid-State NMR Spectroscopy and First-Principles Calculations: Correlating Phosphate and Protonic Motion Gunwoo Kim,1 John M. Griffin,1 Frédéric Blanc,1,# Sossina M. Haile,2 and Clare P. Grey1,3* 1 Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom, 2 Materials Science, Cal...
متن کاملA structural basis for mosaic protonic energy coupling.
to any given H + :P ratio. If the ratio is 3 and the permittivity 20, the distance is approximately 0.3nm. Unlike the electrochemical parameters, $“+ values do not depend on a cumulative ion effect; one proton alone at the right distance from a fixed charge will be at the potential required for synthetic activity. On these terms the rate of synthesis is determined by the number of charge<harge ...
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(17)O NMR spectroscopy combined with first-principles calculations was employed to understand the local structure and dynamics of the phosphate ions and protons in the paraelectric phase of the proton conductor CsH2PO4. For the room-temperature structure, the results confirm that one proton (H1) is localized in an asymmetric H-bond (between O1 donor and O2 acceptor oxygen atoms), whereas the H2...
متن کاملUnusual azobenzene/bipyridine palladacycles: structural, dynamical, photophysical and theoretical studies.
Two types of Pd(ii) azobenzene/bipyridine complexes with unusual coordination mode of azobenzenes, PdCl{(mu-Cl)(mu-R(1)C(6)H(3)N=NC(6)H(3)R(2))}Pd(bpy) 1a-4a and [(bpy)PdCl(mu-NH(2)C(6)H(3)N=NC(6)H(4))Pd(bpy)]Cl 3b were formed by the reaction of dicyclopalladated azobenzenes (DMF)PdCl(mu-R(1)C(6)H(3)N=NC(6)H(3)R(2))PdCl(DMF) with excess of bpy, where bpy=2,2'-bipyridine; R(2)=H and R(1)=H (1), ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2008
ISSN: 0108-7673
DOI: 10.1107/s010876730808313x