Carbonyl Structure H,C c=6: H Formaldehyde Acetone 4=2.27D 4=2.88D The oxygen of the Electrostatic carbonyl group is a nucleophilic center. Potential Map The carbonyl carbon is an electrophilic center Negatively polarized Positively oxygen polarized carbon 丙酮 Carbonyl Structure 丙酮 Electrostatic Potential Map Positively polarized carbon Negatively polarized oxygen The oxygen of the carbonyl group is a nucleophilic center. The carbonyl carbon is an electrophilic center