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Direct Imaging of Octahedral Distortion in a Complex Molybdenum Vanadium Mixed Oxide
Author(s) -
Lunkenbein Thomas,
Girgsdies Frank,
Wernbacher Anna,
Noack Johannes,
Auffermann Gudrun,
Yasuhara Akira,
KleinHoffmann Achim,
Ueda Wataru,
Eichelbaum Maik,
Trunschke Annette,
Schlögl Robert,
Willinger Marc G.
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201502236
Subject(s) - molybdenum , vanadium , octahedron , distortion (music) , materials science , molybdenum oxide , vanadium oxide , crystallography , inorganic chemistry , metallurgy , chemistry , crystal structure , amplifier , optoelectronics , cmos
Complex Mo,V‐based mixed oxides that crystallize in the orthorhombic M1‐type structure are promising candidates for the selective oxidation of small alkanes. The oxygen sublattice of such a complex oxide has been studied by annular bright field scanning transmission electron microscopy. The recorded micrographs directly display the local distortion in the metal oxygen octahedra. From the degree of distortion we are able to draw conclusions on the distribution of oxidation states in the cation columns at different sites. The results are supported by X‐ray diffraction and electron paramagnetic resonance measurements that provide integral details about the crystal structure and spin coupling, respectively.