Abstract

The far-IR spectra for NH₄⁺ and H₃O⁺ complexes with 18-crown-6 have been obtained and the hydrogen-bond vibrational mode <i>v</i>_σ has been assigned. These results illustrate the suitability of far-IR spectroscopy for exploring crown ether molecular ion interactions.

Infrared band intensities in ammonium hydroxide and ammonium salts*

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The Infrared Absorption and Reflection Spectra of the Ammonium Halides

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Complex refractive index of ammonium nitrate in the 2–20-μm spectral range

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