Compound

δ CH₃

δ CHO

δ H₂O

δ (Ar-H)

δ NH₂

L¹

2.50

-

-

7.2 - 7.5

8.0

L¹ + Co(II)

2.49

-

3.52

6.6 - 7.2

7.7

L²

-

9.6

-

7.13 - 7.50

8.4

L² + Ni(II)

-

9.5

3.18

7.0 - 7.33

7.8