Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe4O10, KY(TeO3)(2), RbY(TeO3)(2), and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe3O8
- Authors
- Kim, Youngkwon; Lee, Dong Woo; Ok, Kang Mm
- Issue Date
- Jan-2015
- Publisher
- AMER CHEMICAL SOC
- Citation
- INORGANIC CHEMISTRY, v.54, no.1, pp 389 - 395
- Pages
- 7
- Journal Title
- INORGANIC CHEMISTRY
- Volume
- 54
- Number
- 1
- Start Page
- 389
- End Page
- 395
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9977
- DOI
- 10.1021/ic502724n
- ISSN
- 0020-1669
1520-510X
- Abstract
- Pure polycrystalline phases and single crystals of four new quaternary alkali metal yttrium tellurites, NaYTe4O10, KY(TeO3)(2), RbY(TeO3)(2), and CsYTe3O8, have been prepared by solid-state and hydrothermal reactions using A(2)CO(3) (A = Na, K, Rb, and Cs), Y(NO3)(3)center dot 6H(2)O, Y2O3, and TeO2 as starting reagents. X-ray diffraction analyses suggest that NaYTe4O10 exhibits a highly symmetric three-dimensional (3D) framework consisting of YO8 square antiprisms and chains of TeO4 polyhedra. Within the framework, six- (6-) and eight-membered ring (8-MR) channels are observed. KY(TeO3)(2) and RbY(TeO3)(2) are isostructural to each other and reveal another 3D framework with structures containing YO6 octahedra and TeO3 trigonal pyramids with 4-MR and 12-MR channels. CsYTe3O8 shows a hexagonal tungsten bronze (HTB)-like topology composed of hexagonal tungsten oxide-like layers of TeO4 polyhedra and YO6 octahedral linkers with 3-MR and 6-MR channels. Thermal analyses, elemental analyses, and spectroscopic characterizations, such as UV-vis diffuse reflectance and infrared spectra, are presented, as are local dipole moment calculations for the constituent asymmetric polyhedra TeO3 and TeO4.
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