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γ‐TaON: A Metastable Polymorph of Tantalum Oxynitride
Author(s) -
Schilling Heikko,
Stork Alexandra,
Irran Elisabeth,
Wolff Holger,
Bredow Thomas,
Dronskowski Richard,
Lerch Martin
Publication year - 2007
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.200604351
Subject(s) - tantalum , metastability , materials science , tantalum nitride , crystallography , oxygen atom , nitrogen , chemical stability , chemical physics , chemistry , molecule , metallurgy , organic chemistry
New order : The ammonolysis of β‐Ta 2 O 5 leads to a new, metastable polymorph of tantalum oxynitride, γ‐TaON, which crystallizes in the VO 2 ( B ) structure type (see picture). Quantum‐chemical calculations suggest an ordered distribution of the oxygen and nitrogen atoms in the structure and confirm the stability of the new polymorph.