MATRIX ISOLATION AND FTIR SPECTROSCOPIC STUDIES OF RuC, $RuO_{2}$, $RuO_{3}$ AND $RuO_{4}$

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1983

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Ohio State University

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We will report the results of matrix isolation and FTIR spectroscopic studies of ruthenium oxides obtained by sputtering natural abundance ruthenium in a hollow cathode discharge using different Ar; $^{16}O_{2}:{}^{18}O_{2}$ mixtures for the flow gas. The method used has been described by Green and $Ervin^{(1)}$ and references melted therein. Products observed in the argon matrix at 14k include RuO,$RuO_{2}$, $RuO_{3}$ and possibly $RuO_{4}$. Vibrational frequencies, force constants, and molecular symmetries will be reported omparisons will be made with published gas phase results for $RuO^{(2)}$ and $RuO_{4}^{(3)}$. Calculations were made as in Ref. (1) for the various isotopomers using FG matrix method including vibrational anharonicity in order to estimate stretching force constants. Our interest in the lower ruthenium oxides arises from observations of $RuO_{2}$ photochemical decomposition using flash photolysis and kinetic absorption spectroscopy techniques.

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This work was done at Drexel University, Bryn mawr College, and Argonne National Laboratory. JGK and GLZ are indebted to the Division of Eductional Programms, Argonne National Laboratory, for financial assistance while at Argonne. 1. D.W green and K.M. Ervin, J. Mol. Spectrosc. 89, 145--158 (1981) 2. R. Scullmar and B. Thellin, J. Mol Spectrosec 56, 64--75(1975) 3. L.W Levin and S. Abramomite, J. Chem. Phys. 50, 4860--4865 (1969).
Author Institution: Chemical Technology Division, Argonne National Laboratory; Department of Chemistry, Drexel University; Department of Chemistry, Bryn mawr College

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