Thermal analysis, nuclear magnetic resonance spectroscopy, and impedance spectroscopy of N,N-dimethyl-pyrrolidinium iodide: An ionic solid exhibiting rotator phases

Adebahr, Josefina, Seeber, Aaron J., MacFarlane, Douglas R. and Forsyth, Maria (2005) Thermal analysis, nuclear magnetic resonance spectroscopy, and impedance spectroscopy of N,N-dimethyl-pyrrolidinium iodide: An ionic solid exhibiting rotator phases. Journal of Applied Physics, 97 9: 093904. doi:10.1063/1.1889245

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Author Adebahr, Josefina
Seeber, Aaron J.
MacFarlane, Douglas R.
Forsyth, Maria
Title Thermal analysis, nuclear magnetic resonance spectroscopy, and impedance spectroscopy of N,N-dimethyl-pyrrolidinium iodide: An ionic solid exhibiting rotator phases
Journal name Journal of Applied Physics   Check publisher's open access policy
ISSN 0021-8979
1089-7550
Publication date 2005-01-01
Sub-type Article (original research)
DOI 10.1063/1.1889245
Open Access Status File (Publisher version)
Volume 97
Issue 9
Start page 093904
Total pages 5
Place of publication College Park, MD, United States
Publisher American Institute of Physics
Language eng
Subject 02 Physical Sciences
Abstract N,N-dimethyl-pyrrolidinium iodide has been investigated using differential scanning calorimetry, nuclear magnetic resonance (NMR) spectroscopy, second moment calculations, and impedance spectroscopy. This pyrrolidinium salt exhibits two solid-solid phase transitions, one at 373 K having an entropy change, Delta S, of 38 J mol(-1) K-1 and one at 478 K having Delta S of 5.7 J mol(-1) K-1. The second moment calculations relate the lower temperature transition to a homogenization of the sample in terms of the mobility of the cations, while the high temperature phase transition is within the temperature region of isotropic tumbling of the cations. At higher temperatures a further decrease in the H-1 NMR linewidth is observed which is suggested to be due to diffusion of the cations. (C) 2005 American Institute of Physics.
Keyword Physics, Applied
Plastic Crystal Phases
Electrical-conductivity
Molten-salts
Transport
Tetrafluoroborate
H-1
Nmr
Reorientation
Electrolytes
Dynamics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Earth Sciences Publications
 
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Created: Tue, 14 Aug 2007, 01:13:21 EST