1H and2D N.M.R. studies of the radical anions of biphenyl, fluorenone and phenanthrene

Abstract
The proton N.M.R. spectra of biphenyl-, fluorenone- and phenanthrene- and the deuterium N.M.R. spectra of biphenyl-d10- and phenanthrene-d10- have been measured in ethereal solutions at room temperature. Sign and magnitude of the hyperfine splitting constants derived from the measured contact shifts are reported and compared with E.S.R. data and predictions from theory. From the measured proton and deuterium relaxation times values for the electron spin and the rotational correlation times have been obtained.