Carbon Dioxide Clusters And Copper Complexes Formed In Argon Matrices

Goodrich, Michael E.

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https://hdl.handle.net/2142/51201 Copy

Description

Title

Carbon Dioxide Clusters And Copper Complexes Formed In Argon Matrices

Author(s)

Goodrich, Michael E.

Contributor(s)

Moore, David T.

Issue Date

2014-06-18

Keyword(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)"

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/51201

DOI

https://doi.org/10.15278/isms.2014.WG09

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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