Nuclear magnetic resonance study of polycrystalline NH4ClO 4

James A. Ibers

doi:10.1063/1.1730938

Nuclear magnetic resonance study of polycrystalline NH₄ClO ₄

James A. Ibers^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article

16 Scopus citations

Abstract

The second moments of the proton resonance absorption line in polycrystalline NH₄ClO₄ are found to be 1.27±0.02 gauss² at 70°K and 1.18±0.01 gauss 2 at 298°K; these results are interpreted in terms of reorientation of the ammonium ion about random or nearly random axes. Spin-lattice relaxation times for polycrystalline NH₄ClO₄ have been measured between 77° and 298°K by the progressive saturation method. These relaxation times are consistent with a barrier hindering reorientation of 2.0±0.6 kcal.

Original language	English (US)
Pages (from-to)	1448-1449
Number of pages	2
Journal	The Journal of Chemical Physics
Volume	32
Issue number	5
DOIs	https://doi.org/10.1063/1.1730938
State	Published - Jan 1 1960

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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Ibers, J. A. (1960). Nuclear magnetic resonance study of polycrystalline NH₄ClO ₄. The Journal of Chemical Physics, 32(5), 1448-1449. https://doi.org/10.1063/1.1730938

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abstract = "The second moments of the proton resonance absorption line in polycrystalline NH4ClO4 are found to be 1.27±0.02 gauss2 at 70°K and 1.18±0.01 gauss 2 at 298°K; these results are interpreted in terms of reorientation of the ammonium ion about random or nearly random axes. Spin-lattice relaxation times for polycrystalline NH4ClO4 have been measured between 77° and 298°K by the progressive saturation method. These relaxation times are consistent with a barrier hindering reorientation of 2.0±0.6 kcal.",

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N2 - The second moments of the proton resonance absorption line in polycrystalline NH4ClO4 are found to be 1.27±0.02 gauss2 at 70°K and 1.18±0.01 gauss 2 at 298°K; these results are interpreted in terms of reorientation of the ammonium ion about random or nearly random axes. Spin-lattice relaxation times for polycrystalline NH4ClO4 have been measured between 77° and 298°K by the progressive saturation method. These relaxation times are consistent with a barrier hindering reorientation of 2.0±0.6 kcal.

AB - The second moments of the proton resonance absorption line in polycrystalline NH4ClO4 are found to be 1.27±0.02 gauss2 at 70°K and 1.18±0.01 gauss 2 at 298°K; these results are interpreted in terms of reorientation of the ammonium ion about random or nearly random axes. Spin-lattice relaxation times for polycrystalline NH4ClO4 have been measured between 77° and 298°K by the progressive saturation method. These relaxation times are consistent with a barrier hindering reorientation of 2.0±0.6 kcal.

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