A new anion-deficient fluorite-related super structure of Bi₂₈V₈O₆₂

Autor(en)

Tamara Đorđević, Ljiljana Karanovic

Abstrakt

New hydrothermally synthesized Bi28V8O62 was structurally characterized using single-crystal X-ray diffraction data. Bi28V8O62 crystallizes in the novel type of defect fluorite structure related to the face-centered cubic d-Bi2O3. It is monoclinic, s. g. P21/c, and the relation to the fluorite subcell is given as a~(3/2)aF+(3/2)cF; b~ -bF; c~2aF -4cF (F in subscript indicate the unit cell parameter of fluorite). Its structure is characterized by slabs of edge sharing OBi4 tetrahedra surrounded by the OBi3 triangles. As a part of these OBi3 triangles, two positionally disordered Bi3+ cations were observed in the marginal part of the slabs. The slabs are extending along b axis and are linked by inter-slab portion of the structure composed of VO4 tetrahedra and BiO6-x coordination polyhedra, where x is a number of vacant oxygen sites. Raman spectra verified the coordination environment of vanadium atoms in the structure.

Organisation(en)

Institut für Mineralogie und Kristallographie

Externe Organisation(en)

University of Belgrade

Journal

Journal of Solid State Chemistry

Band

220

Seiten

259-269

Anzahl der Seiten

11

ISSN

0022-4596

DOI

https://doi.org/10.1016/j.jssc.2014.09.010

Publikationsdatum

09-2014

Peer-reviewed

Ja

ÖFOS 2012

104011 Materialchemie, 105113 Kristallographie, 1030 Physik, Astronomie

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Ceramics and Composites, Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a-new-aniondeficient-fluoriterelated-super-structure-of-bi28v8o62(271a7f56-7208-46f3-95ae-aa5160777b7c).html