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These are very sensitive to substitution in the nitroalkane, owing to the high electron affinity of the nitro group. In ketones, such electronic effects are much attenuated. The transition states are characterized by the bond order, <jats:italic>n<\/jats:italic>,*, which is quantitatively correlated to the field\/inductive and resonance effects of the substituents. The deprotonation of fluorence and other carbon acids was also studied. 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