The Fundamental Infrared Spectrum of the Ammonium Ion in Aqueous Solutions

Abstract The infrared absorptions of NH4 + of aqueous solutions of NH4 + salt solutions were recently considered in some detail and, based on changes in the contour of the water band, the effect of anions of the water absorption were discussed.1 We find, however, that differences of the contours of absorptions of pure water and of aqueous solutions can easily produce an artifact.