INFRARED AND RAMAN SPECTRA OF AMMONIUM AND DEUTERO-AMMONIUM PERIODATE AND PERRHENATE

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1971

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Ohio State University

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The infrared and Raman spectra of NH4XO4 and NO4XO4 (X = I, Re) have been obtained. The splittings and number of bands are consistent with site and factor group predictions for Scheelite-type crystals. The ammonium fundamentals and lattice modes have been identified, and a study of the torsional mode as a function of temperature was made in order to study “free” rotation of the ammonium group. The results are used to explain the anomalous temperature dependence of the Nuclear Quadrupole Resonance (NQR) frequencies, and the signal loss in NH4ReO4 at 257∘K.

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Present address of D. A. Hatzenbuhler: Dept. of Chemistry, University of Virginia, Charlottesville, Va. 22901.""


Author Institution: Department of Chemistry, Michigan State University

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http://hdl.handle.net/1811/8649

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1970-1979