Absolute Infrared Intensities of the Ammonium Ion in Crystals
- 1 April 1960
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 32 (4) , 1240-1245
- https://doi.org/10.1063/1.1730881
Abstract
The absolute intensities of the two infrared active fundamentals of the ammonium ion, ν3 and ν4, have been studied in several environments. Dilute solid solutions of NH4+ ions in KCl, KI, CsCl, and CsI were studied and compared with pure NH4I. After separating the effect of the net charge, the apparent bond moments ranged from 0.63 d to 0.80 d (av 0.71) and the bond dipole derivatives, ∂μ/∂r, from 2.06 d/A to 3.59 d/A (av 2.80 d/A). The bond moment is substantially the same as in NH3.Keywords
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