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Crystal Structure of Molybdenum Tantalum Oxide, Mo 2 Ta 2 O 11
Author(s) -
Berendts Stefan,
Stork Alexandra,
Irran Elisabeth,
Lerch Martin
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900434
Subject(s) - octahedron , crystallography , crystal structure , tantalum , tetrahedron , molybdenum , ternary operation , materials science , hexagonal crystal system , lattice constant , lattice (music) , oxide , group (periodic table) , diffraction , chemistry , metallurgy , physics , optics , organic chemistry , computer science , acoustics , programming language
The ternary molybdenum tantalum oxide Mo 2 Ta 2 O 11 was synthesized through two different experimental routes. The crystal structure was determined from X‐ray powder diffraction data. Mo 2 Ta 2 O 11 crystallizes in space group R \bar{3} m (no. 166) with the lattice parameters a = 562.82(2) pm and c = 2516.2(1) pm in hexagonal setting. A so far unknown layered structure with three formula units per unit cell is observed. Corner sharing TaO 6 octahedra form double layers perpendicular to [001] with MoO 4 tetrahedra on each side. The tetrahedra are connected by corners to the TaO 6 octahedra and are isolated from each other. The crystal structure can be described in relation to the ReO 3 ‐type.
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