Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 254, Issue 3, Pages 197-201Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijms.2006.05.024
Keywords
electrospray ionization; iron hydroxide; iron oxide; mass spectrometry; metal nitrate
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Electrospray ionization (ESI) of aqueous iron(III) nitrate solutions can be used as an easy route for the generation of bare iron-oxide and hydroxide cations such as FeO+, FeOH+, and Fe(OH)(2)(+) in the gas phase. Analysis of the ESI mass spectra obtained under variable conditions in combination with complementary collision experiments suggest that the iron-oxo species are formed by collision-energy driven replacements of nitrato-ligands by water stemming from the sprayed solution. It is demonstrated that the gas-phase reactivity of methane with the iron-oxide cation FeO+ generated via ESI is in good agreement with the well-documented literature data for this reaction. (C) 2006 Elsevier B.V. All rights reserved.
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