The Characterization Of Geh2 And Geh Using Matrix Isolation Infrared Spectroscopy

Amicangelo, Jay

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https://hdl.handle.net/2142/50777 Copy

Description

Title

The Characterization Of Geh2 And Geh Using Matrix Isolation Infrared Spectroscopy

Author(s)

Amicangelo, Jay

Contributor(s)

• Huffman, Bruce
• Hoover, Madelyn
• Bailey, Christopher

Issue Date

2014-06-19

Keyword(s)

Matrix isolation (and droplets)

Abstract

Matrix isolation infrared spectroscopy was used to characterize the fundamental infrared peaks of the germanium hydride species \chem{GeH_2} and \chem{GeH} in low temperature argon matrices that result from the vacuum-ultraviolet (VUV) photolysis of germane (\chem{GeH_4}). Experiments were performed by depositing mixtures of \chem{GeH_4} with argon onto a CsI window cooled to 12 K while simultaneously photolyzing the mixture with 121 nm VUV radiation from a hydrogen resonance lamp. For \chem{GeH_2}, the fundamental infrared peaks are observed at 1839.1 \wn (\nub{3}, antisymmetric stretch), 1816.6 \wn (\nub{1}, symmetric stretch) and 913.4 \wn (\nub{2}, bend). For \chem{GeH}, the fundamental infrared stretching peak is observed at 1813.4 \wn. The assignment of the observed peaks is established by performing experiments with isotopic germane (\chem{GeD_4}), by performing matrix annealing experiments (warming to 25 - 35 K and refreezing to 12 K), by performing mercury-xenon lamp matrix photolysis experiments (200 - 900 nm), and by comparison to quantum chemical calculations performed at the B3LYP and MP2 levels of theory. This work corrects what appears to be incorrect assignments made in the earlier report of Smith and Guillory\footnote{G.~R.~Smith and W.~A.~Guillory, J.~Chem.~Phys.~\underline{56}, 1423 (1972)}.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50777

DOI

https://doi.org/10.15278/isms.2014.RI13

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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