| | 1 | Author
| Ulrich Müller, Paul Klingelhöfer | Requires cookie* | | | Title
| /3-NbBr5, eine neue Modifikation von Niobpentabromid mit einer eindimensionalen Lagenfehlordnung ß-NbBrs, a New Modification of Niobium Pentabromide Having One-Dimensional Stacking Disorder  | | | | Abstract
| While trying to react NbBrs with sulfur in a closed tube, crystals of the new modification /?-NbBra were obtained. Its X-ray diffraction patterns have sharp reflexions and diffuse streaks showing the presence of a one-dimensional disorder. From the sharp reflexions alone, a statistically averaged sub-structure results; it has the space group Ccmm and the lattice constants ao = 644, bo = 1867 and Co = 615 pm. Taking into account the diffuse streaks, the true structure was deduced; its lattice constants are a = 2ao, c = Co, b indefinite due to the disorder. /?-NbBrs is isostructural to tantalum pentaiodide. It consists of layers of (NbBrs)2 molecules that are stacked with displacement faults in the direction of b. The bromine atoms have a hexagonal close-packing arrangement. | | | |
Reference
| Z. Naturforsch. 38b, 559—561 (1983); eingegangen am 25. Januar 1983 | | | |
Published
| 1983 | | | |
Keywords
| Niobium Pentabromide, Crystal Structure, Stacking Faults | | | |
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| default:Reihe_B/38/ZNB-1983-38b-0559.pdf | | | | Identifier
| ZNB-1983-38b-0559 | | | | Volume
| 38 | |
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