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Römer, B.C.; Brauman, J.I., Electron Photodetachment Spectroscopy of (E) and (Z)-Propionaldehyde Enolate Anions. Electron Affinities of the Stereoisomers of Propionaldehyde Enolate Radicals., J. Am. Chem. Soc., 1997, 119, 8, 2054, https://doi.org/10.1021/ja962482d . [all data]