Abstract
1 H-NMR spectra of bis-bicyclic hydrazine radical cations allowed determination of the magnitude and sign of the proton splitting constants under ∼2 G, and assignments to position using deuterium labeling were made for several cases. ENDOR spectra measured the hydrogen splittings over 2 G. Bridgehead hydrogen splitting constants for sesquibicyclic compounds (bis-N,N'-bicyclics) were observed in the range -0.10 to +0.14 for six examples containing 2,3-diazabicyclo[2.2.2]octyl rings, -0.14 to -0.04 for two 2,3-diazabicyclo[2.2.2]octenyl compounds, +0.02 to +0.21 for four compounds containing 5,6-diazabicyclo[3.2.2]nonyl and -nonenyl rings, and +0.35 to +0.84 for compounds containing 2,3-diazabicyclo[2.2.1]heptyl rings
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