Synthesis, Characterization, and Antimicrobial Activities of Coordination Compounds of Aspartic Acid

Figure 8

Coordination behaviour of aspartic acid: a function of the pH of the reaction. (a) In strong acid (below pH 1); net charge = +1. (b) Around pH 3; net charge = 0. (c) Around pH 6–8; net charge = −1. (d) In strong alkali (above pH 11) net charge = −2.