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| Hauptseite > Publikationsdatenbank > Effects of Te(IV) Oxo-Anion Incorporation into Thorium Molybdates and Tungstates |
| Hauptseite > Publikationsdatenbank > Effects of Te(IV) Oxo-Anion Incorporation into Thorium Molybdates and Tungstates |
| Journal Article | FZJ-2015-04503 |
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2015
American Chemical Society
Washington, DC
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Please use a persistent id in citations: doi:10.1021/acs.inorgchem.5b00789
Abstract: The exploration of phase formation in the Th−Mo/W−Te systems has resulted in four mixed oxo-anion compounds from high-temperature solid-state reactions:ThWTe2O9, Th(WO4)(TeO3), ThMoTe2O9, and Th2(MoO4)-(TeO3)3. All four compounds contain edge-sharing thorium polyhedra linked by MoO4/WO6 and different tellurium oxogroups to form three-dimensional frameworks. In ThWTe2O9, each helical Th based chain is connected by four tungstotellurite clusters resulting in a building fragment which has a crosssection of four-leafed clovers. The structure of Th(WO4)(TeO3) exhibits a multilayer-sandwich framework composed of thorium tellurite layers with tungsten chains in between. In the case of the molybdate family, ThMoTe2O9 and Th2(MoO4)(TeO3)3 are built from puckered Th−Te sheets which are further interconnected by MoO4 tetrahedral linkers. The DSC-TG technique was performed to gain insight into the thermal behavior of the synthesized compounds. Raman spectra of as-prepared phases were obtained and analyzed for signature peaks.
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