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Crystal structure and ionic conductivity of cesium trifluoromethyl sulfonate, CSSO3CF3
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
2005 (English)In: Zeitschrift für Anorganische und Allgemeines Chemie, ISSN 0044-2313, E-ISSN 1521-3749, Vol. 631, no 9, 1660-1666 p.Article in journal (Refereed) Published
Abstract [en]

The crystal structures of the room and the high temperature modifications of cesium trifluoromethyl sulfonate were solved from high resolution X-ray powder diffraction data. At room temperature, alpha-CsSO3CF3 crystallizes in the monoclinic space group P2(1) with lattice parameters a = 9.7406(2) angstrom, b = 6.1640(1) angstrom, c = 5.4798(1) angstrom, and beta = 104.998(1)degrees; Z = 2. At temperatures above T = 380 K, a second order phase transformation towards a disordered C-centered orthorhombic phase in space group Cmcm occurs with lattice parameters at T = 492 K of a = 5.5074(3) angstrom, b = 19.4346(14) angstrom, and c = 6.2978(4) angstrom; Z = 4. Within the crystal structures, the triflate anions are arranged in double layers with the apolar CF3-groups pointing towards each other. The cesium ions are located between the SO3-groups. CsSO3CF3 shows a specific ion conductivity ranging from sigma = 1.06 center dot 10(-8) Scm(-1) at T = 393 K to sigma = 5.18 center dot 10(-4) Scm(-1) at T = 519 K.

Place, publisher, year, edition, pages
2005. Vol. 631, no 9, 1660-1666 p.
Keyword [en]
cesium, cesium trifluoromethyl sulfonate, crystal structure, synchrotron powder diffraction, ionic conductivity, IR spectroscopy, abinitio structure determination, spin-lattice relaxation, powder diffraction data, paddle-wheel mechanism, sodium ortho-phosphate, x-ray, lithium trifluoromethanesulfonate, cation-transport, anion rotation, unit-cell
URN: urn:nbn:se:kth:diva-14858ISI: 000230081300021OAI: diva2:332899
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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