Reaction pathways to the Zintl phase hydrides CaSiH and MGeHx (M = Sr, Ba)
The hydrogenation (deuteration) of the Zintl phases CaSi and MGe (M = Sr, Ba) will be followed by in situ neutron powder diffraction in a user supplied sapphire single crystal cell. For CaSi an intermediate hydride between CaSi and the fully hydrogenated (deuterated) CaSiD1.2 was found in a previous experiment, which will now be specifically addressed in order to map out its stability and determine its crystal structure including deuterium positions. For the isostructural MGe hydrogenation was not reported before and by in situ X-ray diffraction on a laboratory diffractometer it was shown, that similar intermediate and fully deuterated compounds exist as for CaSi. In situ neutron diffraction will lead to reaction pathways of the deuteration of MGe (M = Sr, Ba) and the full structural characterization of its deuterides. Determination of the crystal structures of such Zintl phase hydrides will help to better understand the fascinating crystal and bonding chemistry of this class of compounds, in which the connectivity of polyanions can be tuned by the reaction with hydrogen.
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Download DataThe recommended format for citing this dataset in a research publication is in the following format:
Holger Kohlmann; AUER Henry; GOETZE André; Thomas C. Hansen and WEBER Sebastian. (2015). Reaction pathways to the Zintl phase hydrides CaSiH and MGeHx (M = Sr, Ba). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-22-734
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