Journal article

Publication year: 2017

Pages: 8782-8792

Journal: Inorganic Chemistry

Volume number: 56

Issue number: 15

ISSN: 0020-1669

eISSN: 1520-510X

DOI Link: https://doi.org/10.1021/acs.inorgchem.7b00551

Publisher: American Chemical Society

Abstract: 
Blue-colored molybdenum oxide nitrides of the Mo-2(O,N,square)(5) type were synthesized by direct nitridation of commercially available molybdenum trioxide with a mixture of gaseous ammonia and oxygen. Chemical composition, crystal structure, and stability of the obtained and hitherto unknown compounds are studied extensively. The average oxidation state of +5 for molybdenum is proven by Mo K near-edge X-ray absorption spectroscopy; the magnetic behavior is in agreement with compounds exhibiting (MoO6)-O-v units. The new materials are stable up to similar to 773 K in an inert gas atmosphere. At higher temperatures, decomposition is observed. X-ray and neutron powder diffraction, electron diffraction, and high-resolution transmission electron microscopy reveal the structure to be related to VNb9O24.9-type phases, however, with severe disorder hampering full structure determination. Still, the results demonstrate the possibility of a future synthesis of the potential binary oxide Mo2O5. On the basis of these findings, a tentative suggestion on the crystal structure of the potential compound Mo2O5, backed by electronic-structure and phonon calculations from first principles, is given.

Harvard Citation style: Weber, D., Huber, M., Gorelik, T., Abakumov, A., Becker, N., Niehaus, O., et al. (2017) Molybdenum Oxide Nitrides of the Mo₂(O,N,□)₅ Type: On the Way to Mo₂O₅, Inorganic Chemistry, 56(15), pp. 8782-8792. https://doi.org/10.1021/acs.inorgchem.7b00551

APA Citation style: Weber, D., Huber, M., Gorelik, T., Abakumov, A., Becker, N., Niehaus, O., Schwickert, C., Culver, S., Boysen, H., Senyshyn, A., Poettgen, R., Dronskowski, R., Ressler, T., Kolb, U., & Lerch, M. (2017). Molybdenum Oxide Nitrides of the Mo₂(O,N,□)₅ Type: On the Way to Mo₂O₅. Inorganic Chemistry. 56(15), 8782-8792. https://doi.org/10.1021/acs.inorgchem.7b00551