Synthese und Struktur-Eigenschaftsbeziehungen gallogermanatischer Sodalithe |NaaXb(H2O)n|[GaGeO4]6 und verwandter Verbindungen
Veröffentlichungsdatum
2016-02-29
Autoren
Betreuer
Gutachter
Zusammenfassung
Syntheses of gallogermanate sodalites, investigations on respective room-temperature and temperature-dependent structure-property relationships as well as studies on the thermal expansion behavior of these sodalites are reported. Syntheses and crystal structures of gallogermanate tetrahydroborate |Na8(BH4)2|[GaGeO4]6 and nitrite |Na8(NO2)2|[GaGeO4]6 sodalites are presented for the first time. For the gallogermanate tetrahydroborate sodalite the temperature-dependent properties were compared to the behavior of the isotypic aluminosilicate, aluminogermanate and gallosilicate tetrahydroborate sodalites by in-situ X-ray diffraction and FTIR spectroscopy. Synthesis screening within reinvestigations of gallogermanate chloride sodalite lead to the discovery of the novel gallogermanate compound Na2H4Ga2GeO8 with NaO6 octahedra helices and TO4 four-ring chain arrangement. Additionally, large gallogermanate chloride-hydro sodalite single crystals with an internal chemical gradient were obtained.
Schlagwörter
Sodalites
;
gallogermanates
;
synthesis
;
crystal structure
;
structure-property relationships
;
X-ray diffraction
;
spectroscopy
;
thermal expansion
Institution
Fachbereich
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Deutsch
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