The research includes the synthesis and identification of two types complexes of the Ligand
anthranilic acid (AH) and Nicotinamide (NA) with Pb (II) and Sn(II).
1-The mixed Ligand complexes of composition , [ M(A)2 (NA)2]
Where AH = Anthranilic acid = C7H7NO2
M(II) = Pb (II) and Sn(II)
2-The mono Ligand Complexes of AH or NA with Pb (II) and Sn(II)
The results showed that the deprotonated ligand ( anthranilic acid ) to anthranilate ion ( A−) by
using (NaOH) coordinated to metal ions as bidentate ligand through the oxygen atom of the
carboxylate group (−COO−), and the nitrogen atom of the amine group (NH2), where the
nicotinamide coordinated as a monodentate through the nitrogen atom.
The complexes of the ligand with metal ions (for mono complexes) were studied in ethanol and
/or water in order to determine the M : L ratio in the complex following the continues variation
method (Job's method) .A series of solutions were prepared having a constant concentration
(10−3 M) of t
