Berlin 2018 – wissenschaftliches Programm
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 27: Postersession KFM
KFM 27.35: Poster
Donnerstag, 15. März 2018, 15:00–17:00, Poster E
The crystal structure of trisodium hexachloroiridate — •Martin Etter1, Melanie Müller2, and Sebastian Bette3 — 1Deutsches Elektronen-Synchrotron, Hamburg, Germany — 2Universität Duisburg-Essen, Duisburg, Germany — 3Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
Strongly hygroscopic inorganic compounds exhibit a rich field of unsolved crystal structures as often several hydrated forms exist. However, solving these crystal structures is challenging, since single crystals are in many cases not available and powders usually consist of several hydrated phases at the same temperature and moisture conditions. Such a challenging compound is for instance the highly hygroscopic trisodium hexachloroiridate (Na3IrCl6) which possess multiple hydrated phases and a so far unsolved crystal structure even of the anhydrous phase.
Here, the crystal structure of the anhydrous phase of trisodium hexachloroiridate (Na3IrCl6) at room temperature was solved after a dehydration process using laboratory powder X-ray diffraction. It was found that the crystal structure of Na3IrCl6 crystallizes in space group P-31c isostructural to the crystal structures of Na3CrCl6, Na3InCl6 and Na3MoCl6 as well as to recently found crystal structure of trisodium hexachlororhodate (Na3RhCl6).
In this presentation structural details about the dehydrated compound will be given as well as an outlook to the variety of hydrated phases.