Inequivalent proton hyperfine couplings of CrO3-4 in LiNH4SO4 and LiKSO4 crystals: An EPR study

Shen Yuan Chou; Jiang Tsu Yu; Ching Jiun Wu; Yng Huey Jeng

doi:10.1016/0038-1098(93)90397-6

Inequivalent proton hyperfine couplings of CrO^3-₄ in LiNH₄SO₄ and LiKSO₄ crystals: An EPR study

Shen Yuan Chou, Jiang Tsu Yu^*, Ching Jiun Wu, Yng Huey Jeng

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

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Abstract

The CrO^3-₄ radicals produced by λ-irradiation in LiNH₄SO₄ and LiKSO₄ crystals exhibit hyperfine splittings due to two magnetically inequivalent protons. This is in contrast to the magnetic equivalence of the proton hyperfine splittings observed for the NH⁺₃ radicals simultaneously produced in these same host lattices. The proton hyperfine splittings of the CrO^3-₄ radicals also exhibit much more significant anisotropies than those exhibited by the protons of the NH⁺₃ radicals. These imply a slowing-down of dynamics of the ammonium protons adjacent to the CrO^3-₄ radical.

Original language	English
Pages (from-to)	149-152
Number of pages	4
Journal	Solid State Communications
Volume	88
Issue number	2
DOIs	https://doi.org/10.1016/0038-1098(93)90397-6
Publication status	Published - 1993 Oct

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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title = "Inequivalent proton hyperfine couplings of CrO3-4 in LiNH4SO4 and LiKSO4 crystals: An EPR study",

abstract = "The CrO3-4 radicals produced by λ-irradiation in LiNH4SO4 and LiKSO4 crystals exhibit hyperfine splittings due to two magnetically inequivalent protons. This is in contrast to the magnetic equivalence of the proton hyperfine splittings observed for the NH+3 radicals simultaneously produced in these same host lattices. The proton hyperfine splittings of the CrO3-4 radicals also exhibit much more significant anisotropies than those exhibited by the protons of the NH+3 radicals. These imply a slowing-down of dynamics of the ammonium protons adjacent to the CrO3-4 radical.",

author = "Chou, {Shen Yuan} and Yu, {Jiang Tsu} and Wu, {Ching Jiun} and Jeng, {Yng Huey}",

note = "Funding Information: Acknowledgement -- The authors gratefully acknowledge the support given by the National Science Council of the Republic of China during the period of this research.",

year = "1993",

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doi = "10.1016/0038-1098(93)90397-6",

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T1 - Inequivalent proton hyperfine couplings of CrO3-4 in LiNH4SO4 and LiKSO4 crystals

T2 - An EPR study

AU - Chou, Shen Yuan

AU - Yu, Jiang Tsu

AU - Wu, Ching Jiun

AU - Jeng, Yng Huey

N1 - Funding Information: Acknowledgement -- The authors gratefully acknowledge the support given by the National Science Council of the Republic of China during the period of this research.

PY - 1993/10

Y1 - 1993/10

N2 - The CrO3-4 radicals produced by λ-irradiation in LiNH4SO4 and LiKSO4 crystals exhibit hyperfine splittings due to two magnetically inequivalent protons. This is in contrast to the magnetic equivalence of the proton hyperfine splittings observed for the NH+3 radicals simultaneously produced in these same host lattices. The proton hyperfine splittings of the CrO3-4 radicals also exhibit much more significant anisotropies than those exhibited by the protons of the NH+3 radicals. These imply a slowing-down of dynamics of the ammonium protons adjacent to the CrO3-4 radical.

AB - The CrO3-4 radicals produced by λ-irradiation in LiNH4SO4 and LiKSO4 crystals exhibit hyperfine splittings due to two magnetically inequivalent protons. This is in contrast to the magnetic equivalence of the proton hyperfine splittings observed for the NH+3 radicals simultaneously produced in these same host lattices. The proton hyperfine splittings of the CrO3-4 radicals also exhibit much more significant anisotropies than those exhibited by the protons of the NH+3 radicals. These imply a slowing-down of dynamics of the ammonium protons adjacent to the CrO3-4 radical.

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Inequivalent proton hyperfine couplings of CrO^3-₄ in LiNH₄SO₄ and LiKSO₄ crystals: An EPR study

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