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Exchange and dipolar interactions in a solid nitroxide radical

✍ Scribed by C.R. Mao; R.W. Kreilick

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
364 KB
Volume
34
Category
Article
ISSN
0009-2614

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✦ Synopsis

The J?.SR linewidths of solid samples of tie di-r-butylnitroxide rydiul have been mezsured aver PII extended temperature racge at three different Zeeman frequencies. The magnitude of both the exchailge =d dipclx interactions CZXI be de termtied tI-zough an analysis of the linewidths. Both of these interactions are found to have a complex temperatue dependence.

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## Abstract At high concentrations of oxygen, the EPR spectrum of the nitroxide radical 4‐oxo‐TEMPO (= 4‐oxo‐2,2,6,6‐tetramethylpiperidin‐1‐yloxy) is found to broaden significantly. In addition to the expected broadening, double integration of the EPR signals indicates that a significant fraction o