Die Kristallstruktur des Calciumazid-Dihydrates |
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| Authors: | Franz A Mautner Harald Krischner Christoph Kratky |
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| Institution: | (1) Institut für Physikalische und Theoretische Chemie, Abteilung für Strukturforschung, Technische Universität Graz, A-8010 Graz, Austria;(2) Institut für Physikalische Chemie, Universität Graz, A-8010 Graz, Austria |
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| Abstract: | Single crystals of Ca(N3)2·2 H2O have been prepared from aqueous solutions at room temperature. The crystals are monoclinic,a=1 159.0 (3),b=614.2 (2),c=785.5 (2) pm,  =106.52 (2)°,Z=4, space group P21/n. The crystal structure was determined by single crystal X-ray diffraction (1 109 Mo-K -reflexions,R=0.052). Calcium atoms are surrounded by four azide groups and four water molecules. The coordination polyhedra are antiprism which are sharing azide groups and water molecules to form layers. The lattice constants and powder pattern agree well with values reported earlier for Ca(N3)2 · 1.5 H2O 1]. It was also shown, that Sr(N3)2 · 2 H2O is isotypic with Ca(N3)2 · 2 H2O. |
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| Keywords: | Azide Calcium Crystal structure Dihydrate |
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