Table 2: 1H-NMR data of ML, FL ligands and their Mo and W complexes.


Compound δO−H δN−H δO−CH3 δHa δHb δHc δHd δHe δHf 3J 3J 3J
(Ha-Hb) (Hc-Hd) (He-Hf)

ML 12.88 10.38 3.73 6.42 6.40 7.57 6.93 6.93 7.56 6 3 2.4
6.45 6.43 7.53 6.92 6.92 7.52
FL 11.99 10.35 7.23 7.21 7.78 7.48 7.48 7.78 6.3 6.6 1.8
7.27 7.25 7.77 7.43 7.43 7.77
2 10.96 10.25 3.73 6.37 6.41 6.91 6.88 6.88 6.91 12 9 9
6.25 6.29 7.55 7.52 7.52 7.55
3 11.3 10.36 3.73 6.34 6.38 6.90 6.93 6.93 6.90 12 9 9
6.24 6.28 7.52 7.55 7.55 7.52
5 10.82 10.59 6.40 6.44 7.63 7.66 7.66 7.63 12 9 9
6.26 6.30 7.13 7.16 7.16 7.13
6 10.66 10.50 6.41 6.45 7.62 7.65 7.65 7.62 12 9 9
6.27 6.30 7.13 7.16 7.16 7.13