ESR CHARACTERIZATION OF MATRIX ISOLATED YbH, YbD, AND YbF

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1977

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Ohio State University

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The $^{2} \Sigma$ electronic ground state molecules YbH, YbD, and YbF were trapped in argon matrices at $4^\circ K$ and investigated with ESR spectroscopy. YbH and YbD were produced by quenching ytterbium and hydrogen atoms in a flow of argon; YbF was produced from a mixture of Yb and $YbF_{3}$. The g tensors and hyper fine constants for interaction with nuclear spins 0 and 1/2 were determined and indicate that the spin density is predominately on the metal atom. Approximate wave functions are derived from molecular data. Spin doubling constants agree very well with those obtained from gas phase experiments, $^{1,2}$

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$^{1}$ L. Hagland, I. Kopp, and N. Aslund, Arkiv Fysik 32, 321 (1966). $^{2}$ R. F. Barrow and A. H. Chojnicki, J. Chem. Soc., Faraday Trans II 71, 728 (1975).
Author Institution: Department of Chemistry, University of Florida

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