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Collision-induced dissociation of lanthanide oxide ions in quadrupole ion traps: Effects of bond strength and mass

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Abstract

Collision-induced dissociation (CID) rates are measured for a suite of lanthanide (plus yttrium) monoxide ions stored in a quadrupole ion trap. Yttrium, neodymium, and gadolinium oxides, having the same nominal dissociation energy (D0 ≈ 735 kJ mol-1) but different masses, provide an empirical correction of -1.2s-1 amu-1 for the measured CID rates. The CID rate correction enables the correlation of bond dissociation energy with CID rate, allowing quantitative determinations of bond dissociation energies for lanthanide metal monoxide ions. For bond dissociation energies in the range of 567-849 kJ mol-1, mass corrected rates range from 50 to 120 s-1. The calibration sensitivity is equivalent to 5 kJ mol-1 s-1, and the measurement precision is ∼25 kJ mol-1. Bond energy determinations are found to agree with the average values reported for lanthanide oxide ions.

Original languageEnglish
Pages (from-to)85-93
Number of pages9
JournalInternational Journal of Mass Spectrometry
Volume216
Issue number1-2
DOIs
StatePublished - Apr 15 2002

Funding

Research sponsored by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy, under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC. Discussions with Scott A. McLuckey of Purdue University in the early stages of this work are gratefully acknowledged.

Keywords

  • Bond strength
  • Collision-induced dissociation
  • Lanthanide oxide ions

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