Table 7: Proton NMR spectral data for ligands and the diamagnetic complexes.

Compound Chemical shift, (δ) ppm & Assignment
S.TH
ligand
11.89(s,1H, NH)
8. 80(s,1H, CH=N)
7.24-7.89 (d, m 7H, Aromatic ring)
1.85(s,3H, CH3)
S.TH-Ag
1-1
11. 91(s,1H, NH)
8. 90 (s,1H, CH=N)
7. 12-7.66 (d, m 7H, Aromatic ring)
1.82(s,3H, CH3)
S.TH-Zn
2-1
11.85(s,2H, NH)
8. 97 (s,1H, CH=N)
7.22-7. 91 (d, m 14H, Aromatic ring)
1.84 (s,6H, CH3)