Electron-electron double-resonance investigations of irradiated organic crystals: The influence of deuterium substitution

Kispert, Lowell D.; Chang, Kichoon; Wang, Pu Sen

doi:10.1016/0022-2364(74)90294-7

Electron-electron double-resonance investigations of irradiated organic crystals: The influence of deuterium substitution

Conference · Sun Sep 30 20:00:00 EDT 1973 · Journal of Magnetic Resonance

DOI:https://doi.org/10.1016/0022-2364(74)90294-7· OSTI ID:4336192

Kispert, Lowell D. ^[1]; Chang, Kichoon ^[1]; Wang, Pu Sen ^[1]

Univ. of Alabama, Tuscaloosa, AL (United States)

Electron-electron double resonance (ELDOR) investigations of irradiated organic crystals have shown promising uses of deuterium substitution in the ELDOR identification of magnetically different radicals associated with a poorly resolved ESR spectrum. Replacement of the water of crystallization in potassium acetate with deuterium oxide has removed the proton spin-flip lines in the ELDOR spectrum of the methyl radical and has increased the ELDOR resolution observed at 77°K. Studies of the hydrogen-deuterium exchange reactions in irradiated glycine-d₃ and L-alanine crystals have shown the absence of ELDOR lines at the deuteron hyperfine frequency aD and the absence of proton-deuteron combination lines, but the presence of an intense line at the proton hyperfine splitting frequency. In addition, a decrease in the intermolecular cross-exchange near room temperature permitted a separation of the proton ELDOR spectra for each hydrogen-deuterium exchange reaction, making it possible to identify the different simultaneously occurring reactions.

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Research Organization:: Univ. of Alabama, Tuscaloosa, AL (United States)

Sponsoring Organization:: US Atomic Energy Commission (AEC)

NSA Number:: NSA-29-029104

OSTI ID:: 4336192

Report Number(s):: ORO--4062-13; CONF-731067--1

Journal Information:: Journal of Magnetic Resonance, Journal Name: Journal of Magnetic Resonance Vol. 14; ISSN 0022-2364

Publisher:: Elsevier BV

Country of Publication:: United States

Language:: English

References (17)

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Electron—electron double resonance of irradiated dicholorfluoroacetamide: The dominant role of the chlorine quadrupole Kispert, Lowell D.; Chang, Kichoon; Bogan, Carolyn M. Chemical Physics Letters, Vol. 17, Issue 4 https://doi.org/10.1016/0009-2614(72)85113-3	journal	December 1972
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Electron-electron double resonance of irradiated single crystals of zinc acetate and malonic acid. Influence of nuclear spin exchange Kispert, Lowell D.; Chang, Kichoon; Bogan, Carolyn M. The Journal of Physical Chemistry, Vol. 77, Issue 5 https://doi.org/10.1021/j100624a013	journal	March 1973
Electron-electron double resonance demonstration of cross saturation between trapped electrons and radicals in .gamma.-irradiated 2-methyltetrahydrofuran glass Yoshida, Hiroshi; Feng, Da-Fei; Kevan, Larry Journal of the American Chemical Society, Vol. 94, Issue 25 https://doi.org/10.1021/ja00780a055	journal	December 1972
Frequency-Swept Electron–Electron Double Resonance: Separation of Overlapping Spectra in Irradiated Malonic Acid Hyde, James S.; Kispert, Lowell D.; Sneed, Robert C. The Journal of Chemical Physics, Vol. 48, Issue 8 https://doi.org/10.1063/1.1669692	journal	April 1968
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Trichloromethyl and other radicals in irradiated single crystals of trichloroacetamide Kispert, Lowell D.; Rogers, Max T. The Journal of Chemical Physics, Vol. 58, Issue 5 https://doi.org/10.1063/1.1679471	journal	March 1973
Electron-electron double resonance of irradiated dimethylmalonic acid, α-aminoisobutyric acid, and L-alanine single crystals: The role of methyl substituents Kispert, Lowell D.; Chang, Kichoon; Bogan, Carolyn M. The Journal of Chemical Physics, Vol. 58, Issue 5 https://doi.org/10.1063/1.1679483	journal	March 1973
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Electron-electron double-resonance investigations of irradiated organic crystals: The influence of deuterium substitution

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