Electronic absorption spectra of the 5d3 hexafluororhenate(IV) ion |
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Authors: | Joseph A LoMenzo Suzanne Strobridge Howard H Patterson Herbert Engstrom |
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Institution: | Department of Chemistry, University of Maine, Orono, Maine 04473 USA;Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 USA |
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Abstract: | The Γ8(4A2g) →Γ7(2T2g), Γ8(2T2g) electronic transitions for the 5d3 hexafluororhenate(IV) ion have been observed at liquid hydrogen temperature in a single Cs2GeF6 crystal and in a mixed crystal where the ReF?26 ion is doped in the cubic Cs2GeF6 lattice. The electronic transitions have been assigned with a crystal field model to give information about the parameters B, C, Dq, and spin-orbit coupling. The vibrational structure in the mixed crystal system may be assigned to the ungerade modes of the ReF?26 moiety. Comparison of the mixed and pure crystal vibrational structure shows that the pure crystal vibrational structure can be interpreted on the basis of K ≠ 0 lattice effects and a small distortion in the pure crystal. |
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