Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13065-022-00820-2/MediaObjects/13065_2022_820_Fig4_HTML.png)
Job’s plot for the determination of the binding stoichiometry of a compound 4a with Hg2+ obtained from variations in absorption at 418 nm, b compound 4b with Hg2+ obtained from variations in absorption at 418 nm
Job’s plot for the determination of the binding stoichiometry of a compound 4a with Hg2+ obtained from variations in absorption at 418 nm, b compound 4b with Hg2+ obtained from variations in absorption at 418 nm