Synthesis, Spectroscopic Characterization, and Biological Evaluation Studies of 5-Bromo-3-(((hydroxy-2-methylquinolin-7-yl)methylene)hydrazono)indolin-2-one and Its Metal (II) Complexes

Figure 7

Proposed structure of Zn(II), Cd(II), and Hg(II) metal complexes (tetrahedral).