Keywords: Carboxylate-resonance-2D.png of the delocalisation of electrons in the pi system of a carboxylate anion Structure drawn in http //www cambridgesoft com/software/details/ ds 2 dsv 73 ChemDraw Ultra 11 0 Own 2009-04-28 Ben Mills Benjah-bmm27 Images by Ben Mills Carboxylate ions |