Molecular Niobium Precursors in Various Oxidation States: An XAS Case Study
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paper85.pdf
Description
Accepted version
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2.38 MB
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Author(s)
Korzynski, Maciej Damian
Braglia, Luca
Borfecchia, Elisa
Lamberti, Carlo
Dinca, Mircea
Date Issued
October 2018
Journal
Inorganic Chemistry
Publisher
American Chemical Society (ACS)
Citation
Korzyński, Maciej D., et al. "Molecular Niobium Precursors in Various Oxidation States: an XAS Case Study." Inorganic Chemistry 57, 21 (2018): p. 13998-4004 doi 10.1021/ACS.INORGCHEM.8B02616 ©2018 Author(s)
Version
Author's final manuscript
Abstract
Although X-ray absorption spectroscopy (XAS) has become an indispensable tool in characterization of solid-state materials, it is less of a staple in molecular chemistry of niobium. Scattering X-ray techniques remain relatively unexplored for the systematic study of molecular niobium compounds. Here, we use XAS to probe the niobium environment in commonly used Nb precursors in +V, +IV, and +III oxidation states. Apart from laying out the guidelines for identification of niobium oxidation states, we correlate our data with density functional theory models to provide further structural insight. Of particular note, we are able to shed light on the nature of the commonly used and catalytically competent NbCl[subscript 3](DME), which had not been previously characterized structurally despite its prevalence in Nb chemistry.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/ACS.INORGCHEM.8B02616
