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Title:Carbon Dioxide Clusters And Copper Complexes Formed In Argon Matrices
Author(s):Goodrich, Michael E.
Contributor(s):Moore, David T
Subject(s):Mini-symposium: Beyond the Mass-to-Charge Ratio: Spectroscopic Probes of the Structures of Ions
Abstract:Neutral and anionic clusters containing carbon monoxide and carbon dioxide molecules were observed in FTIR matrix isolation spectroscopy experiments following co-deposition of Cu$^{-}$ and Ar$^{+}$ in argon matrices doped with moderate amounts (0.1-1\%) of CO$_{2}$ and/or CO. Following deposition at 10 K with 0.5\% CO$_{2}$, peaks for CuCO$_{2}$$^{-}$ and Cu(CO$_{2}$)$_{2}$$^{-}$ were observed, along with a small peak for CO$_{2}$$^{-}$ and several bands assigned to neutral (CO$_{2}$)$_{x}$ clusters. Upon annealing to 20 K, a new peak appears at 1857 \wn, which is assigned to the C$_{2}$O$_{4}$$^{-}$ ion, based on previous work in neon matrices.\footnote{Zhou, M.F.; Andrews, L.; J. Chem. Phys. 110, 6820 (1999).} When CO is added as a dopant (0.5 \%) to the matrix gas mix, formation of the anionic copper CO$_{2}$ complexes is suppressed, and neutral CO-CO$_{2}$ complexes are observed in the spectra, as are bands corresponding to C$_{2}$O$_{3}$$^{-}$, based on previous studies.\footnote{Zhou, M.F.; et al., J. Chem. Phys. 112, 7089 (2000).} Interestingly, the copper carbonyl bands typically observed for equivalent deposition conditions in the absence of CO$_{2}$ are strongly suppressed in these spectra. The implication is that complexation with the CO$_{2}$ molecules, which are far more abundant in the matrix, inhibits the CO molecules from "finding" the Cu$^{-}$ centers during the matrix formation process. (c.f. ISMS 2014 abstract \#P616)
Issue Date:2014-06-18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Goodrich, M.E.; Moore, D.T. CARBON DIOXIDE CLUSTERS AND COPPER COMPLEXES FORMED IN ARGON MATRICES. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.WG09
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License.
Date Available in IDEALS:2014-09-17

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