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http://dx.doi.org/10.18419/opus-14493
Autor(en): | Aghaei Hakkak, Rouzbeh Klapötke, Thomas M. Schleid, Thomas |
Titel: | Two new energetic hexagonal anti-perovskites (N2H5)3X[B12H12] · H2O (X- = [NO3]- and [ClO4]-) : crystal structure, vibrational spectra, and thermal decomposition |
Erscheinungsdatum: | 2024 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 15 |
Erschienen in: | Crystals 14 (2024), No. 310 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-145128 http://elib.uni-stuttgart.de/handle/11682/14512 http://dx.doi.org/10.18419/opus-14493 |
ISSN: | 2073-4352 |
Zusammenfassung: | Two novel energetic anti-perovskite compounds with the chemical formula (N2H5)3X[B12H12] · H2O, where X- is either [NO3]− or [ClO4]−, were successfully synthesized. Both dodecahydro-closo-dodecaborates crystallize orthorhombically in the space group Cmc21, exhibiting relatively similar lattice parameters ((N2H5)3[NO3][B12H12] · H2O: a = 915.94(5), b = 1817.45(9), c = 952.67(5) pm, (N2H5)3[ClO4][B12H12] · H2O: a = 1040.51(6), b = 1757.68(9), c = 942.34(5) pm both for Z = 4). Their synthesis involved a two-step process: first, Cs2[B12H12] passed through a cation exchange column to yield the acidic form of the dodecahydro-closo-dodecaborate, (H3O)2[B12H12]. This aqueous solution was subsequently neutralized with hydrazinium hydroxide and mixed with the corresponding water-dissolved hydrazinium salt (nitrate or perchlorate). Characterization of the obtained crystals was performed by single-crystal X-ray diffraction and Raman spectroscopy as well as thermal analyses (TG-DTA and DSC). The crystal structure determinations revealed that both compounds adopt a hexagonal anti-perovskite structure, distorted by the presence of water molecules. These compounds containing oxidizing oxoanions demonstrate a remarkable ability to release large amounts of energy (almost 2100 J/g) upon thermal decomposition. |
Enthalten in den Sammlungen: | 03 Fakultät Chemie |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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crystals-14-00310.pdf | Artikel | 11,73 MB | Adobe PDF | Öffnen/Anzeigen |
crystals-14-00310-s001.zip | Supplement | 580,66 kB | Unknown | Öffnen/Anzeigen |
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