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ELECTRON SPIN RESONANCE SPECTRA OF RADICALS IN GAMMA IRRADIATED DICYANDIAMIDE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/8403

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Title: ELECTRON SPIN RESONANCE SPECTRA OF RADICALS IN GAMMA IRRADIATED DICYANDIAMIDE
Creators: Lind, G.; Kewley, R.
Issue Date: 1970
Abstract: The ESR spectra of three radical species have been observed near g = 2 in powder and single crystal samples of dicyandiamide (cyanoguanidine). ($NH_{2})_{2} C_{2}NCN$. One of the spectra is a broad line of width 8 G. The other spectra each show interaction of an unpaired electron with one proton and one $N^{14}$ nucleus. One radical, with $a_{H}$ = 29 G and $a_{N}$ = 16 G is a $\pi$-electron radical whereas the other, with $a_{H}$ = 72.5 G and $a_{N}$ = 6 G appears to be a $\pi$-electron radical. The origin of the radicals in relation to the atom positions in the undamaged dicyandiamide crystal will be discussed.
URI: http://hdl.handle.net/1811/8403
Other Identifiers: 1970-E-5
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